42
The Periodic Table of Elements 118 U uo 117 U us 116 U uh (292) 115 U up (288) 114 U uq (289) 113 U ut (284) 112 U ub (285) 111 Rg (272) 110 Ds (269) 109 Mt (268) 108 Hs (269) 107 Bh (264) 106 Sg (266) 105 Db (262) 104 Rf (261) 103 Lr (262) 88 Ra (226) 87 Fr (223) 86 Rn (222) 85 At (210) 84 Po (209) 83 Bi 208.980 82 Pb 207.2 81 Tl 204.383 80 Hg 200.59 79 Au 196.967 78 Pt 195.078 77 Ir 192.217 76 Os 190.23 75 Re 186.207 74 W 183.84 73 Ta 180.95 72 Hf 178.49 71 Lu 174.967 56 Ba 137.327 55 Cs 132.905 54 Xe 131.29 53 I 126.904 52 Te 127.60 51 Sb 121.760 50 Sn 118.710 49 In 114.818 48 Cd 112.4 47 Ag 107.868 46 Pd 106.42 45 Rh 102.906 44 Ru 101.07 43 Tc (98) 42 Mo 95.94 41 Nb 92.906 40 Zr 91.224 39 Y 88.906 38 Sr 87.62 37 Rb 85.468 36 Kr 83.80 35 Br 79.904 34 Se 78.96 33 As 74.922 32 Ge 72.61 31 Ga 69.723 30 Zn 65.39 29 Cu 63.546 28 Ni 58.69 27 Co 58.933 26 Fe 55.845 25 Mn 54.938 24 Cr 51.996 23 V 50.942 22 Ti 47.87 21 Sc 44.956 20 Ca 40.078 19 K 39.098 118 U uo 117 U us 116 U uh (292) 115 U up (288) 114 U uq (289) 113 U ut (284) 112 U ub (285) 111 Rg (272) 110 Ds (269) 109 Mt (268) 108 Hs (269) 107 Bh (264) 106 Sg (266) 105 Db (262) 104 Rf (261) 103 Lr (262) 88 Ra (226) 87 Fr (223) 86 Rn (222) 85 At (210) 84 Po (209) 83 Bi 208.980 82 Pb 207.2 81 Tl 204.383 80 Hg 200.59 79 Au 196.967 78 Pt 195.078 77 Ir 192.217 76 Os 190.23 75 Re 186.207 74 W 183.84 73 Ta 180.95 72 Hf 178.49 71 Lu 174.967 56 Ba 137.327 55 Cs 132.905 54 Xe 131.29 53 I 126.904 52 Te 127.60 51 Sb 121.760 50 Sn 118.710 49 In 114.818 48 Cd 112.4 47 Ag 107.868 46 Pd 106.42 45 Rh 102.906 44 Ru 101.07 43 Tc (98) 42 Mo 95.94 41 Nb 92.906 40 Zr 91.224 39 Y 88.906 38 Sr 87.62 37 Rb 85.468 36 Kr 83.80 35 Br 79.904 34 Se 78.96 33 As 74.922 32 Ge 72.61 31 Ga 69.723 30 Zn 65.39 29 Cu 63.546 28 Ni 58.69 27 Co 58.933 26 Fe 55.845 25 Mn 54.938 24 Cr 51.996 23 V 50.942 22 Ti 47.87 21 Sc 44.956 20 Ca 40.078 19 K 39.098 102 No (259) 101 Md (258) 100 Fm (257) 99 Es (252) 98 Cf (251) 97 Bk (247) 96 Cm (247) 95 Am (243) 94 Pu (244) 93 Np (237) 92 U 238.029 91 Pa 231.036 90 Th 232.038 89 Ac (227) 70 Yb 173.04 69 Tm 168.934 68 Er 167.26 67 Ho 164.930 66 Dy 162.50 65 Tb 158.925 64 Gd 157.25 63 Eu 151.964 62 Sm 150.36 61 Pm (145) 60 Nd 144.24 59 Pr 140.908 58 Ce 140.116 57 La 138.906 102 No (259) 101 Md (258) 100 Fm (257) 99 Es (252) 98 Cf (251) 97 Bk (247) 96 Cm (247) 95 Am (243) 94 Pu (244) 93 Np (237) 92 U 238.029 91 Pa 231.036 90 Th 232.038 89 Ac (227) 70 Yb 173.04 69 Tm 168.934 68 Er 167.26 67 Ho 164.930 66 Dy 162.50 65 Tb 158.925 64 Gd 157.25 63 Eu 151.964 62 Sm 150.36 61 Pm (145) 60 Nd 144.24 59 Pr 140.908 58 Ce 140.116 57 La 138.906 12 Mg 24.305 11 Na 22.990 4 Be 9.012 3 Li 6.941 12 Mg 24.305 11 Na 22.990 4 Be 9.012 3 Li 6.941 1 H 1.008 1 H 1.008 2 He 4.003 2 He 4.003 18 Ar 39.948 17 Cl 35.453 16 S 32.066 15 P 30.974 14 Si 28.086 13 Al 26.982 18 Ar 39.948 17 Cl 35.453 16 S 32.066 15 P 30.974 14 Si 28.086 13 Al 26.982 10 Ne 20.180 9 F 18.998 8 O 15.999 7 N 14.007 6 C 12.001 5 B 10.811 10 Ne 20.180 9 F 18.998 8 O 15.999 7 N 14.007 6 C 12.001 5 B 10.811 1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Lanthanides A ctinides

The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

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Page 1: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

The Periodic Table of Elements

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

Page 2: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

What is the Periodic Table?

• It is an organizational system for elements.

Picture from www.chem4kids.com

Page 3: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Why is the Periodic Table Important?

• The periodic table is the most useful tool to a chemist.

• It organizes lots of information about all the known elements

http://www.youtube.com/watch?v=lDp9hUf_SV8&edufilter=vH8ntV7keCE-ZLl5wRMzNg

Page 4: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Remember that an Element

• Is a pure substance made up of one kind of atom that cannot be broken down into simpler substances by physical or chemical means

• 90 occur naturally on earth• 25 were synthesized (made) by

scientists

http://www.privatehand.com/flash/elements.htmlhttp://www.scienceraps.co.uk/rap_science_periodic_table.html

Page 5: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Who created the it?

Dmitri MendeleevIn 1869, Russian chemist Dimitri Mendeleev proposed arranging elements by atomic weights and properties.

Image taken from: http://jscms.jrn.columbia.edu/cns/2006-04-18/fido-luxuriantflowinghair/mendeleev/

Page 6: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Why do you think there are question marks here?Image taken from: http://www.chemsoc.org/networks/learnnet/periodictable/post16/develop/mendeleev.htm

Mendeleev’s Published Periodic Table of Elements

Page 7: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Who was Henry Moseley?

• Arranged elements by atomic number instead of mass

• Realized that there were undiscovered elements

Image taken from: http://dewey.library.upenn.edu/sceti/smith/

Page 8: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

So how is it arranged?

• The genius of the periodic table “is that it is organized like a big grid. The elements are placed in specific places because of the way they look and act. If you have ever looked at a grid, you know that there are rows (left to right) and columns (up and down). The periodic table has rows and columns, too, and they each mean something different.”

•quoted from http://www.chem4kids.com/files/elem_pertable.html

Page 9: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Periods =Rows• Even though they skip

some squares in between, all of the rows go left to right. When you look at a periodic table, each of the rows is considered to be a different period (Get it? Like PERIODic table.)

•quoted from http://www.chem4kids.com/files/elem_pertable.html

Page 10: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Groups=Columns

• The periodic table has a special name for its columns, too. When a column goes from top to bottom, it's called a group.

•quoted from http://www.chem4kids.com/files/elem_pertable.html

Page 11: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

The Modern Periodic Table(3 main categories)

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

Class Color

Metal

Non-Metal

Metalloid

Page 12: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

MetalsLocation

• Found on the left of the zigzag line/staircase on the periodic table

Chemical Properties• Reactivity- ease and speed

with which an element combines with other elements or compounds

• Have few electrons in their outer energy level, thus lose electrons easily

Physical Properties• ductile, good conductors of

heat and electricity, malleable, shiny, most are solid @ room temperature What metal is not a solid

@ room temperature?

Image taken from: http://chemistry.about.com/od/periodictableelements/ig/Element-Photo-Gallery.--98/Sodium.htm

11

Na

22.990

79

Au

196.967

Page 13: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Atoms with Few Electrons in their Outer Energy Level

Notice: only 1 electron in outer

level

Notice: only 2

electrons in outer level

+

++

+

++

+

+++

-

-

-

-

--

-

-+

-

-

-

+

+++ --

-

-

11

Na

22.990

4

Be

9.012

Page 14: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Non-MetalsLocation

• Most found to the right of the zigzag line/staircase on the periodic tableChemical Properties

• Most have almost full outer energy levels, thus they tend to gain electrons; some have completely full outer levelPhysical Properties

• not ductile or malleable, Dull, Brittle , poor conductors, most are solid, but some are gas at room temperature

Image taken from: http://nobel.scas.bcit.ca/resource/ptable/cl.htm

Image taken from:https://www.dmr.nd.gov/ndgs/rockandmineral/sulfur.asp

16

S32.06

6

17

Cl35.45

3

Page 15: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Atoms with Full or Almost Full Outer Energy Level

   

Notice: 7 electrons in outer level – almost full

Notice: 2 electrons in outer level –

FULL

Notice: 6 electrons in outer level – almost full

+

+++

+++

-

-

-

-

--

-

-+

+

+

+

++

+

+++

-

-

-

-

--

-

-

-

++ -

-

9

F18.99

8

8

O15.99

9

2

He

4.003

Page 16: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Metalloids

Location • Border the zigzag

line/staircase on the periodic tableChemical Properties

• Outer electron shells are about half-full

Physical Properties

• have properties of both metals and non-metals

Image taken from: http://library.thinkquest.org/C0113863/bios.shtml

Image taken from: http://library.thinkquest.org/C0113863/bios.shtml

5

B10.81

1

14

Si28.08

6

Page 17: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Atoms with ½ (≈) Complete Outer Energy Level                   

Notice: only 3 electrons in outer

level

Notice: only 4 electrons in outer level

+

+

+++

-

-

-

-

-

++

++

++

+

++

+

+++

-

-

-

-

--

-

-+

-

-

-

-

-

-

5

B10.81

1

14

Si28.08

6

Page 18: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Coloring Periodic Table(Homework)

1. Title “The Periodic Table of Elements”

2. Create Element Key

3. Draw Zigzag

4. Number periods and groups

5. Color Metals ORANGE

6. Color Nonmetals BLUE

7. Color Metalloids GREEN

Page 19: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

The periodic table is divided into horizontal rows called PERIODS

Periods are numbered 1-7

FROM LEFT TO RIGHT OR RIGHT TO LEFT

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

How many

periods (rows)are on the

Periodic Table

Of Elements

?

Page 20: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Period (Row) Properties• Seven periods on a periodic table (numbered

from the top down)• Atomic numbers and atomic masses increase

as you move from the left to the right in a period

• All atoms of the elements in the same period have the same number of orbitals/levels– Example

• Period 1 = 1 orbital• Period 2 = 2 orbitals• Period 3 = 3 orbitals

• Etc…

Page 21: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Examples of Period (Row) elements having the same number of orbitals/levels in their atoms

++

++ --

-

-

+

+++

+++

-

-

-

-

--

-

- +

++

+++

+

+

+++

+++

-

-

-

-

--

-

-+

-

-

-

-

-

-

++

+

+

+++

+++

-

-

-

-

--

-

-+

-

-

-

In what period (row) doyou think

these atoms reside?

In what period (row) doyou think

these atoms reside?

Page 22: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

• each column of elements on the periodic table 1-18

The Periodic Table is divided into vertical columns: Group (Family)

FROM TOP TO BOTTOM OR BOTTOM TO THE TOP

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

How many groups (families)

are on the Periodic Table Of Elements?

Page 23: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Group (Family) Properties• 18 groups (numbered

from left to right) • Atoms of elements in the

same group have the same number of valence electrons

Exceptions: • Transition elements

(3-12) • Helium (actually has

2 valence electrons)• Elements in groups

usually have similar physical and chemical properties

• Families have names rather than numbers (just like your family)

Page 24: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Examples of Group 1 Elements with the same # of valence electrons

                          

87

Fr(223)

55

Cs132.905

37

Rb85.468

19

K39.098

11

Na22.990

3

Li6.941

1

H1.008

+

++

+

+++

+++

-

-

-

-

--

-

-+

-

-

-

+

-

+

-

+++

-

-

-

+++

+++

-

-

-

How many electrons do each of these atoms have in their outer

orbital/level?

What group (family) do these elements reside in?

Page 25: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

Group (Family) NamesAlkali Metals

Alkaline Earth

Metals

Transition Metals

Boron Group

Carbon Group

Nitrogen Group

Oxygen GroupHalogens

Noble Gases

Page 26: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Identify the Element

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

118

Uuo117

Uus116Uuh(292)

115

Uup(288)

114

Uuq(289)

113

Uut(284)

112Uub(285)

111

Rg(272)

110

Ds(269)

109

Mt(268)

108

Hs(269)

107

Bh(264)

106

Sg(266)

105

Db(262)

104

Rf(261)

103

Lr(262)

88

Ra(226)

87

Fr(223)

86

Rn(222)

85

At(210)

84

Po(209)

83

Bi208.980

82

Pb207.2

81

Tl204.383

80

Hg200.59

79

Au196.967

78

Pt195.078

77

I r192.217

76

Os190.23

75

Re186.207

74

W183.84

73

Ta180.95

72

Hf178.49

71

Lu174.967

56

Ba137.327

55

Cs132.905

54

Xe131.29

53

I126.904

52

Te127.60

51

Sb121.760

50

Sn118.710

49

I n114.818

48

Cd112.4

47

Ag107.868

46

Pd106.42

45

Rh102.906

44

Ru101.07

43

Tc(98)

42

Mo95.94

41

Nb92.906

40

Zr91.224

39

Y88.906

38

Sr87.62

37

Rb85.468

36

Kr83.80

35

Br79.904

34

Se78.96

33

As74.922

32

Ge72.61

31

Ga69.723

30

Zn65.39

29

Cu63.546

28

Ni58.69

27

Co58.933

26

Fe55.845

25

Mn54.938

24

Cr51.996

23

V50.942

22

Ti47.87

21

Sc44.956

20

Ca40.078

19

K39.098

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

102

No(259)

101

Md(258)

100

Fm(257)

99

Es(252)

98

Cf(251)

97

Bk(247)

96

Cm(247)

95

Am(243)

94

Pu(244)

93

Np(237)

92

U238.029

91

Pa231.036

90

Th232.038

89

Ac(227)

70

Yb173.04

69

Tm168.934

68

Er167.26

67

Ho164.930

66

Dy162.50

65

Tb158.925

64

Gd157.25

63

Eu151.964

62

Sm150.36

61

Pm(145)

60

Nd144.24

59

Pr140.908

58

Ce140.116

57

La138.906

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

12

Mg24.305

11

Na22.990

4

Be9.012

3

Li6.941

1

H1.008

1

H1.008

2

He4.003

2

He4.003

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

18

Ar39.948

17

Cl35.453

16

S32.066

15

P30.974

14

Si28.086

13

Al26.982

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

10

Ne20.180

9

F18.998

8

O15.999

7

N14.007

6

C12.001

5

B10.811

1

2

3

4

5

6

7

1

2

3 4 5 6 7 8 9 10 11 12

13 14 15 16 17

18

Lanthanides

Actinides

Period 2 – Group 14 Carbon - CPeriod 5 – Group 2 Strontium - SrGroup 17 – Period 6 Astatine - AtGroup 4 – Period 7 Rutherfordium - Rf

Page 27: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Using the Periodic Table• The boxes that make up the periodic table contain a

significant amount of information. To understand this information, it is necessary to refer to the periodic table’s key(s)

Atomic Number (Number of protons)

Element Symbol(Written with a capital letter or a capital followed by a lower case if two letters )

Atomic Mass(Rounded to a whole number, equals the number of protons and neutrons)

8

OOxygen

15.999

Class Color

Metal

Non-Metal

Metalloid

State (@ Room Temp.)

Symbol

Color

Solid

Liquid

Gas

Which class does Oxygen

fall into?

What is Oxygen’s physical state of matter?

Element Name

Page 28: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Hydrogen

• Hydrogen belongs to a family of its own.

• Rarely found as pure element, mostly in H20

• Hydrogen is a diatomic, reactive gas.

• Hydrogen was involved in the explosion of the Hindenberg.

Page 29: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Alkali Metals• Group 1 Elements:

(not including Hydrogen)

Lithium, Rubidium Sodium, Cesium Potassium, Francium

MOST reactive metals, never found uncombined in nature (like in salt).

• 1 electron in the outer shell

• Soft and silvery metals• Conduct electricity

Page 30: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Alkaline Earth Metals

The Group 2 ElementsBeryllium, Magnesium, Calcium Strontium, Barium ,Radium• 2 electrons in the outer shell• White and malleable• Reactive, but less than Alkali

metals• Conduct electricity

• Several of these elements are important mineral nutrients (such as Mg and Ca)

Page 31: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Transition Metals

• Elements in groups 3-12• Less reactive, harder

metalsGood conductors of heat and

electricity.Some are used for jewelry.The transition metals are able to

put up to 32 electrons in their second to last shell.

Can bond with many elements in a variety of shapes.

Page 32: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Boron Family

• Elements in group 13

Boron ,Aluminum, Gallium, Indium, Thallium

• Aluminum metal was once rare and expensive, not a “disposable metal.”

• Elements have 3 valence electrons.

• All are metals except Boron (metalloid)

• Aluminum is the most common metal in the Earth’s crust.

Page 33: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Carbon Family

• Elements in group 14Carbon, Silicon,

Germanium, Tin, Lead• Contains elements

important to life and computers.

• Carbon is the basis for an entire branch of chemistry.

• Elements have 4 valence electrons

• Silicon is used to make semiconductors for computers and other electronics .

• Diamond and Graphite are two forms of carbon.

Page 34: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Nitrogen Group

• Elements in group 15

• Nitrogen makes up over ¾ of the atmosphere.

• Nitrogen and phosphorus are both important in living things.

• The red stuff on the tip of matches is phosphorus.

• Elements have 5 valence electrons

• Can share electrons to form compounds

• Contains metals, metalloids, and non-metals

Page 35: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Oxygen or Chalcogens Family

• Elements in group 16Oxygen, Sulfur, Selenium,

Tellurium, Polonium• Oxygen is necessary for

respiration.• Many things that stink,

contain sulfur (rotten eggs, garlic, skunks, etc

• About 20% of the Earth’s atmosphere is oxygen.

Page 36: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Halogens

• Elements in group 17• Fluorine, chlorine,

bromine and iodine• Very reactive, volatile,

diatomic, nonmetals• Always found combined

with other elements in nature.

• Used as disinfectants and to strengthen teeth.

• The Halogens form salts with the alkali metals.

• Fluorine is an active ingredient in toothpaste

Page 37: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

The Noble Gases

• Elements in group 18

Helium, Neon, Argon, Krypton, Xenon, Radon

• VERY unreactive, monatomic gases

• Used in lighted “neon” signs

• Do NOT ordinarily form compounds.

• Have a full valence shell

Page 38: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

The Lanthanides and The Actinides

• The Lanthanides• Soft metals that can be

cut with a knife.• Were once called rare

earth metals.• Glass used in computer

and TV screens contain Yttirum and Europium

• The Actinides• All actinides are

radioactive.• Thorium, Proactinium

and Uranium are the only actinides found naturally on earth.

• Plutonium is used to fuel nuclear power plants.

Page 39: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

What is an ION?

• Charged atoms (or groups of atoms) are called ions.

• An atom becomes charged by either gaining or losing one or more electrons.

• An atom that has lost one or more e- is a positive ion or (cation). The atom now has more protons than e-.

• An atom that has gained one or more e- is a negative ion (anion). The atom now has

more e- than protons.

Page 40: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Cation or Positive Ion

Page 41: The Periodic Table of Elements What is the Periodic Table? It is an organizational system for elements. Picture from

Anion or Negative Ion