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- 1 -
Sixth Form Entrance 2019
CHEMISTRY
1 hour
Name (Capital Letters): ...................................................................... Present School: ……………………………………………………….
Answer ALL the questions Use of a calculator is permitted.
TOTAL MARK = 60
Answers to Section A should be answered on the question paper. Answers to Section B should be written on the blank pages at the end of the question paper.
A copy of the Periodic Table is included with the question paper (back page). If you know the name of the examination board and the title of the chemistry course you are currently studying e.g. AQA Chemistry, Edexcel, OCR Gateway or 21st Century Science, IGCSE write it below. Indicate if you are doing Triple Science (i.e. you will get separate grades in Biology, Chemistry and Physics) or Double Science. Board_________________ Course________________________ Triple/Double __________
- 2 -
SECTION A
Q1 Use the Periodic Table to help you with this question.
Identify the particle and remember to include the relative atomic mass number in your
response:
(i) An atom with one fewer proton and the same number of neutrons as an atom of 66Zn.
(ii) An ion with one more proton and two more neutrons as an atom of 20Ne but the
same number of electrons.
(iii) An ion with one fewer proton, one fewer neutron and the same number of
electrons as an atom of 129Xe.
(iv) A particle with one fewer proton, two more neutrons and the same number of
electrons as a 127I- ion
[TOTAL = 7]
- 3 -
Q2 (a) You are given the formulae of the following ions. Write the chemical formula of
the following substances. The first one is shown as an example.
Ion Formula Ion Formula
Ammonium NH4+ Phosphate PO4
3−
Magnesium Mg2+ Nitride N3−
Lithium Li+ Hydroxide OH−
Potassium K+ Hydrogencarbonate HCO3−
Lead(II) Pb2+ Carbonate CO32−
Iron(III) Fe3+ Sulfate SO42−
Barium Ba2+ Nitrate NO3−
Example: Barium Iodide BaI2
(i) Barium sulfate..............................................................................
(ii) Magnesium nitrate.........................................................................
(iii) Iron(III) phosphate.............................................................................
(iv) Lead hydrogencarbonate.........................................................................
(v) Magnesium hydroxide.....................................................................
[5]
(b) Put numbers in front of the formulae as necessary to balance the equations
below:
(i) ........Ba + ......... H2O .........Ba(OH)2 + .........H2
(ii) ........H3PO4 + ........NaOH ........Na3PO4 + ..........H2O
(iii) ........C9H18 + ........O2 ........CO2 + ........H2O
[3]
[TOTAL = 8]
- 4 -
Q3 The following table gives some information about several substances.
Substance Melting
point /
°C
Boiling
point /
°C
Electrical
conductivity
when solid
Electrical
conductivity
when molten
Solubility in
water
A -56 120 poor poor insoluble
B -110 -23 poor poor soluble
C 750 2500 poor good soluble
D 1200 4000 poor poor insoluble
E 450 1100 good good insoluble
For each of the substances, A to E, decide the type of bonding and structure present. Circle
the correct answers below.
(a) A: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(b) B: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(c) C: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(d) D: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(e) E: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
[TOTAL = 5]
- 5 -
Q4
(a) Describe the similarities and differences between the three sub-atomic particles that make
up all atoms. In your answer you should refer to their charge, mass and location in the
nucleus.
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
[6]
(b) The element indium consists of two isotopes. 4.30% of the atoms are 113In and 95.7% of
the atoms are 115In.
(i) What makes both of these atoms the element indium?
…………………………………………………………………………………………………..
[1]
(ii) What are isotopes?
…………………………………………………………………………………………………..
[1]
(iii) Calculate the relative atomic mass of indium. Give you answer to an appropriate number
of significant figures.
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
[3]
- 6 -
(c) The diameter of an indium atom is 310 pm (picometres).
(i) What is the diameter of an indium atom in metres? Give your answer in standard form.
…………………………………………………………………………………………………..
[2]
(ii) How many indium atoms would fit in a line 20 cm long? Give your answer to three
significant figures.
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
…………………………………………………………………………………………………..
[4]
[TOTAL = 17]
- 7 -
Q5
A group of students investigated the reaction between marble chips (calcium carbonate) and
dilute hydrochloric acid.
The equation for this reaction is
CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)
They wanted to find the effect of changing the concentration of hydrochloric acid on the rate
of reaction. The teacher provided a solution that she had labelled 100% hydrochloric acid.
The teacher told them to do all their experiments
using different concentrations of hydrochloric acid made by diluting the 100%
hydrochloric acid
by timing how long it took to collect carbon dioxide
at room temperature
The students used this apparatus.
(a) The students tried to keep the amount of calcium carbonate constant by using the same
number of marble chips in
each experiment.
State two other properties of the marble chips that should be the same in each experiment.
1....................................................................................................................................................
2....................................................................................................................................................
[2]
- 8 -
(b) The table shows how some of the students wrote down their results.
The teacher said that she could only use the results from student 1 because the other students
had not recorded enough information.
Identify the piece of information that each of the other students failed to record:
Student 2.......................................................................................................................................
Student 3.......................................................................................................................................
Student 4.......................................................................................................................................
Student 5.......................................................................................................................................
[4]
(c) The students repeated the experiment to make sure that it was a fair test. They used a
different supply of hydrochloric acid. They all measured the time to collect 100 cm3 of
carbon dioxide and calculated the rate of each reaction.
Their results are shown in the table.
- 9 -
(i) Plot these results on the grid and draw a straight line of best fit.
[4]
(ii) One of the points is anomalous. Circle this point on the graph.
[1]
(iii) Suggest two errors in the experiment that could have caused this anomalous result.
1....................................................................................................................................................
2....................................................................................................................................................
[2]
(iv) Use your graph to estimate the rate of reaction using an acid concentration of 50%.
Show on your graph how you obtained your answer.
......................................................................................................................................................
......................................................................................................................................................
[2]
[TOTAL = 15]
- 10 -
SECTION B
Write your answers to this section on the blank pages which follow.
Write notes on TWO of the following [4 marks each]. Use diagrams and chemical equations
where relevant.
(a) The Haber process
(b) The manufacture of aluminium from its ore
(c) The production of sulphuric acid
(d) The reactivity of alkanes
(e) The concept of the mole and how it is used in Chemistry
SECTION B ANSWER
- 11 -
SECTION B ANSWER (continued)
- 12 -
SECTION B ANSWER (continued)
- 13 -
3 11
19
37
55
87
4 12
20
38
56
88
21
39
57
89
22
40
72
104
23
41
73
105
24
42
74
106
25
43
75
58
90
59
91
60
92
61
93
62
94
63
95
64
96
65
97
66
98
67
99
68
100
69
101
70
102
71
103
26
44
76
27
45
77
28
46
78
29
47
79
30
48
80
5 13
31
49
81
6 14
32
50
82
7 15
33
51
83
8 16
34
52
84
9 17
35
53
85
10
18
36
54
86
Li
Na K Rb
Cs
Fr7 23
39
85
133
(223
)
9 24
40
88
137
(226
)
45
89
139
(227
)
48
91
178
(261
)
51
93
18
1
(26
2)
52
96
184
(263
)
55
(99
)
18
6
140
232
141
(231)
14
4
23
8
(14
7)
(23
7)
15
0
(24
2)
15
2
(24
3)
15
7
(24
7)
159
(245
)
163
(251
)
165
(254
)
167
(253
)
169
(256
)
173
(254)
17
5
(25
7)
56
10
1
19
0
59
10
3
19
2
59
10
6
19
5
63
.5
10
8
19
7
65
.4
112
201
11
27
70
11
5
204
12
28
73
11
9
207
14
31
75
122
209
16
32
79
12
8
(21
0)
19
35.5
80
12
7
(21
0)
20
40
84
13
1
(22
2)
Lith
ium
So
diu
m
Po
tassiu
m
Ru
bid
ium
Ca
esiu
m
Fra
nciu
m
Bery
lium
Mag
ne
siu
m
Ca
lciu
m
Str
on
tium
Ba
riu
m
Ra
diu
m
Sca
ndiu
m
Ytt
riu
m
Lanth
an
um
Actiniu
m
Titaniu
m
Zircon
ium
Hafn
ium
Un
nilq
ua
diu
m
Va
na
diu
m
Nio
biu
m
Tan
talu
m
Un
nilp
entium
Ch
rom
ium
Mo
lybd
en
um
Tun
gste
n
Un
nilh
exiu
m
Mang
an
ese
Te
chn
etiu
m
Rh
en
ium
Ceriu
m
Tho
riu
m
Pra
seo
dym
ium
Pro
tactiniu
m
Neo
dim
ium
Ura
niu
m
Pro
me
thiu
m
Ne
ptu
niu
m
Sa
mari
um
Plu
toniu
m
Euro
piu
m
Am
eri
ciu
m
Gad
olin
ium
Curi
um
Terb
ium
Be
rke
lium
Dyspro
siu
m
Ca
lifo
rniu
m
Ho
lmiu
m
Ein
ste
iniu
m
Erb
ium
Fe
rmiu
m
Thu
lium
Men
dele
viu
m
Ytte
rbiu
m
Nob
eliu
m
Lute
tiu
m
Law
renciu
m
Iron
Ru
the
niu
m
Osm
ium
Co
ba
lt
Rho
diu
m
Irid
ium
Nic
kel
Pa
llad
ium
Pla
tin
um
Co
pp
er
Silv
er
Go
ld
Zin
c
Cad
miu
m
Me
rcury
Boro
n
Alu
min
ium
Ga
llium
Indiu
m
Tha
lliu
m
Carb
on
Sili
con
Germ
aniu
m
Tin
Lea
d
Nitro
gen
Ph
osp
ho
rus
Ars
en
ic
An
tim
on
y
Bis
mu
th
Oxyg
en
Su
lph
ur
Sele
niu
m
Tellu
riu
m
Polo
niu
m
Flu
ori
ne
Chlo
rin
e
Bro
min
e
Iodin
e
Asta
tine
Ne
on
Arg
on
Kry
pto
n
Xen
on
Rad
on
Heliu
mH
ydro
gen
12
14
H
Be
Mg
Ca
Sr
Ba
Ra
Sc Y La
Ac
Ti
Zr
Hf
Un
q
V Nb
Ta
Un
p
Cr
Mo
W
Un
h
Mn
Tc
Re
Ce
Th
Pr
Pa
Nd U
Pm
Np
Sm
Pu
Eu
Am
Gd
Cm
Tb
Bk
Dy
Cf
Ho
Es
Er
Fm
Tm
Md
Yb
No
Lu
Lr
Fe
Ru
Os
Co
Rh Ir
Ni
Pd
Pt
Cu
Ag
Au
Zn
Cd
Hg
B Al
Ga
In Ti
C Si
Ge
Sn
Pb
N P As
Sb
Bi
O S Se
Te
Po
F Cl
Br I At
Ne
Ar
Kr
Xe
Rn
He
Ato
mic
Num
ber
Sym
bo
l
Nam
e
Mola
r m
ass in
g m
ol–
1
Peri
od
Ke
y
Gro
up
TH
E P
ER
IOD
IC T
AB
LE
12
34
56
70
1 2 3 4 5 6 7
La
nth
an
ide
ele
me
nts
Ac
tin
ide
ele
me
nts
- 1 -
Sixth Form Entrance 2018
CHEMISTRY
1 hour
Name (Capital Letters): ......................................................................
Present School: ……………………………………………………….
Answer ALL the questions
TOTAL: 60 marks
Answers to Section A should be answered on the question paper.
Answers to Section B should be written on the blank pages at the end of the question paper.
A copy of the Periodic Table is included with the question paper (back page).
Use of a calculator is permitted.
If you know the name of the examination board and the title of the chemistry course you are
currently studying e.g. AQA Chemistry, Edexcel, OCR Gateway or 21st Century Science,
IGCSE write it below. Indicate if you are doing Triple Science (i.e. you will get separate
grades in Biology, Chemistry and Physics) or Double Science.
Board_________________ Course________________________ Triple/Double __________
- 2 -
SECTION A
Q1 Use the Periodic Table to help you with this question.
Identify the particle, remember to include the relative atomic mass number in your
response
(i) An atom with 10 protons and the same number of neutrons than that of an atom of 39K
(ii) An ion with one more proton and two more neutrons as an atom of 20Ne but the
same number of electrons
(iii) An ion with one more proton, two more neutrons, but the same number of
electrons as an ion of 85Rb+
(iv) An ion with one less proton, one less neutron and the same number of electrons as
an atom of 129Xe
[TOTAL = 7]
- 3 -
Q2 (a) You are given the formulae of the following ions. Write the chemical formula of
the following substances. The first one is shown as an example.
Ion Formula Ion Formula
Ammonium NH4+ Phosphate PO4
3−
Magnesium Mg2+ Nitride N3−
Lithium Li+ Hydroxide OH−
Potassium K+ Hydrogencarbonate HCO3−
Lead(II) Pb2+ Carbonate CO32−
Iron(III) Fe3+ Sulfate SO42−
Barium Ba2+ Nitrate NO3−
Example: Barium Iodide BaI2
(i) Barium Chloride..............................................................................
(ii) Magnesium Nitride.........................................................................
(iii) Iron (III) Sulfate.............................................................................
(iv) Lithium Carbonate.........................................................................
(v) Ammonium Phosphate.....................................................................
[5]
(b) Put numbers in front of the formulae as necessary to balance the equations
below:
(i) ........ZnS + ......... O2 .........ZnO + .........SO2
(ii) ........FeCl3 + ........MgO ........Fe 2O3 + ..........MgCl2
(iii) ........C7H16 + ........O2 ........CO2 + ........H2O
[3]
[TOTAL = 8]
- 4 -
Q3 The following table gives some information about several substances.
Substance Melting
point /
°C
Boiling
point /
°C
Electrical
conductivity
when solid
Electrical
conductivity
when molten
Solubility in
water
A 910 1555 good good insoluble
B -105 10 poor poor soluble
C 546 1234 poor good soluble
D -154 -55 poor poor insoluble
E 1955 3546 poor poor insoluble
For each of the substances, A to E, decided the type of bonding and structure present. Circle
the correct answers below.
(a) A: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(b) B: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(c) C: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(d) D: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
(e) E: Bonding – Covalent / Ionic / Metallic
Structure – Giant / Simple Molecular
[TOTAL = 5]
- 5 -
Q4 Crude oil is an important source of organic compounds.
(a) The diagram shows how crude oil is separated into fractions in the oil industry.
(i) What happens to the crude oil in A?
(1)
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(ii) Most of the compounds in crude oil are hydrocarbons.
What is meant by the term hydrocarbons?
(2)
.............................................................................................................................................
.............................................................................................................................................
- 6 -
(iii) Compare the hydrocarbons in fractions D and F in terms of
boiling point
size of molecules
viscosity
(3)
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(b) Some of the fractions are catalytically cracked. The general equation for some reactions
in this process is
alkane → alkane + alkene
(i) State two conditions used in catalytic cracking.
(2)
1 ............................................................................................................................................
................................................................................................................................................
2 .............................................................................................................................................
................................................................................................................................................
(ii) How does the bonding in an alkene molecule differ from the bonding in an alkane
molecule?
(1)
.............................................................................................................................................
.............................................................................................................................................
- 7 -
(iii) The chemical equation for one cracking reaction is
C16H34 → C8H18 + 2C3H6 + compound Q
Deduce the molecular formula of Q.
(1)
.............................................................................................................................................
(c) The compound with molecular formula C3H6 can be used to make a polymer.
(i) Give the name of the compound C3H6
(1)
.............................................................................................................................................
(ii) Complete the table of information about this compound.
(3)
- 8 -
(iii) Complete this structure to show the part of the polymer formed from two molecules of
C3H6
(2)
[TOTAL = 16]
- 9 -
Q5 Hydrogen peroxide solution decomposes very slowly at room temperature.
The equation for this reaction is
2H2O2 → 2H2O + O2
Very few bubbles can be seen in the solution because of the slow decomposition.
The rate of this reaction is greatly increased by adding a catalyst.
(a) A student added a solid to some hydrogen peroxide solution to see if the solid acted as a
catalyst.
He noticed that a lot of bubbles formed, and that the solid was still present at the end of the
reaction.
Outline a method to show that the solid acted as a catalyst and not as a reactant.
(2)
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(b) The student investigated the effect that changing the concentration of the hydrogen
peroxide solution has on the rate of the reaction.
He used solid manganese(IV) oxide as the catalyst in each experiment.
This is the method he used.
pour some hydrogen peroxide solution into a conical flask on a top-pan balance
add the catalyst and place some cotton wool loosely in the neck of the flask
record the balance reading and start a timer
record the balance reading every minute until the mass no longer changes
repeat the experiment several times using different concentrations of hydrogen
peroxide solution(i)
State one property of each substance that the student should keep the same in each
experiment.
(2)
hydrogen peroxide solution
.............................................................................................................................................
.............................................................................................................................................
- 10 -
manganese(IV) oxide
.............................................................................................................................................
.............................................................................................................................................
(ii) What is the purpose of the cotton wool?
(1)
.............................................................................................................................................
.............................................................................................................................................
(c) The graph shows the results of one of the student's experiments.
(i) Why does the balance reading decrease during the experiment?
(1)
.............................................................................................................................................
.............................................................................................................................................
(ii) What does the slope of the curve indicate about the reaction?
(1)
.............................................................................................................................................
.............................................................................................................................................
- 11 -
(iii) How long does the reaction take to complete?
(1)
.............................................................................................................................................
.............................................................................................................................................
(d) The results of some of the student's other experiments are shown on this graph.
(i) Which one of the experiments, R, S or T, was the fastest?
State how you deduced your answer.
(1)
.............................................................................................................................................
...............................................................................................................................................
...............................................................................................................................................
- 12 -
(ii) The concentration of the hydrogen peroxide solution in experiment S was 0.40 mol/dm3.
Use the graph to deduce the concentration of the hydrogen peroxide solution in
experiment T.
State how you deduced your answer.
(2)
concentration = ........................................................... mol/dm3
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
(e) Another student repeated the investigation.
She recorded the time for the total mass of the beaker and contents to decrease by 0.50 g
in each experiment. She then converted the times to relative rates of reaction.
The table shows the concentrations she used and the relative rates of reaction she
calculated.
Plot a graph of these results on the grid.
Draw a straight line of best fit through the points.
(3)
- 13 -
(f) Explain, in terms of particles, why the rate of a reaction increases as the concentration of
a reactant increases.
(2)
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
.............................................................................................................................................
[TOTAL = 16]
- 14 -
SECTION B
Write your answers to this section on the blank pages which follow.
Write notes on TWO of the following [4 marks each]. Use diagrams and chemical equations
where relevant.
(a) The bonding and structure of graphite and diamond
(b) The manufacture of iron from its ore
(c) The industrial electrolysis of brine
(d) The reactivity of alkenes
(e) The concept of the mole and how it is used in Chemistry
SECTION B ANSWER
- 15 -
SECTION B ANSWER (continued)
- 16 -
SECTION B ANSWER (continued)
- 17 -
3 11
19
37
55
87
4 12
20
38
56
88
21
39
57
89
22
40
72
104
23
41
73
105
24
42
74
106
25
43
75
58
90
59
91
60
92
61
93
62
94
63
95
64
96
65
97
66
98
67
99
68
100
69
101
70
102
71
103
26
44
76
27
45
77
28
46
78
29
47
79
30
48
80
5 13
31
49
81
6 14
32
50
82
7 15
33
51
83
8 16
34
52
84
9 17
35
53
85
10
18
36
54
86
Li
Na K Rb
Cs
Fr7 23
39
85
133
(223
)
9 24
40
88
137
(226
)
45
89
139
(227
)
48
91
178
(261
)
51
93
18
1
(26
2)
52
96
184
(263
)
55
(99
)
18
6
140
232
141
(231)
14
4
23
8
(14
7)
(23
7)
15
0
(24
2)
15
2
(24
3)
15
7
(24
7)
159
(245
)
163
(251
)
165
(254
)
167
(253
)
169
(256
)
173
(254)
17
5
(25
7)
56
10
1
19
0
59
10
3
19
2
59
10
6
19
5
63
.5
10
8
19
7
65
.4
112
201
11
27
70
11
5
204
12
28
73
11
9
207
14
31
75
122
209
16
32
79
12
8
(21
0)
19
35.5
80
12
7
(21
0)
20
40
84
13
1
(22
2)
Lith
ium
So
diu
m
Po
tassiu
m
Ru
bid
ium
Ca
esiu
m
Fra
nciu
m
Bery
lium
Mag
ne
siu
m
Ca
lciu
m
Str
on
tium
Ba
riu
m
Ra
diu
m
Sca
ndiu
m
Ytt
riu
m
Lanth
an
um
Actiniu
m
Titaniu
m
Zircon
ium
Hafn
ium
Un
nilq
ua
diu
m
Va
na
diu
m
Nio
biu
m
Tan
talu
m
Un
nilp
entium
Ch
rom
ium
Mo
lybd
en
um
Tun
gste
n
Un
nilh
exiu
m
Mang
an
ese
Te
chn
etiu
m
Rh
en
ium
Ceriu
m
Tho
riu
m
Pra
seo
dym
ium
Pro
tactiniu
m
Neo
dim
ium
Ura
niu
m
Pro
me
thiu
m
Ne
ptu
niu
m
Sa
mari
um
Plu
toniu
m
Euro
piu
m
Am
eri
ciu
m
Gad
olin
ium
Curi
um
Terb
ium
Be
rke
lium
Dyspro
siu
m
Ca
lifo
rniu
m
Ho
lmiu
m
Ein
ste
iniu
m
Erb
ium
Fe
rmiu
m
Thu
lium
Men
dele
viu
m
Ytte
rbiu
m
Nob
eliu
m
Lute
tiu
m
Law
renciu
m
Iron
Ru
the
niu
m
Osm
ium
Co
ba
lt
Rho
diu
m
Irid
ium
Nic
kel
Pa
llad
ium
Pla
tin
um
Co
pp
er
Silv
er
Go
ld
Zin
c
Cad
miu
m
Me
rcury
Boro
n
Alu
min
ium
Ga
llium
Indiu
m
Tha
lliu
m
Carb
on
Sili
con
Germ
aniu
m
Tin
Lea
d
Nitro
gen
Ph
osp
ho
rus
Ars
en
ic
An
tim
on
y
Bis
mu
th
Oxyg
en
Su
lph
ur
Sele
niu
m
Tellu
riu
m
Polo
niu
m
Flu
ori
ne
Chlo
rin
e
Bro
min
e
Iodin
e
Asta
tine
Ne
on
Arg
on
Kry
pto
n
Xen
on
Rad
on
Heliu
mH
ydro
gen
12
14
H
Be
Mg
Ca
Sr
Ba
Ra
Sc Y La
Ac
Ti
Zr
Hf
Un
q
V Nb
Ta
Un
p
Cr
Mo
W
Un
h
Mn
Tc
Re
Ce
Th
Pr
Pa
Nd U
Pm
Np
Sm
Pu
Eu
Am
Gd
Cm
Tb
Bk
Dy
Cf
Ho
Es
Er
Fm
Tm
Md
Yb
No
Lu
Lr
Fe
Ru
Os
Co
Rh Ir
Ni
Pd
Pt
Cu
Ag
Au
Zn
Cd
Hg
B Al
Ga
In Ti
C Si
Ge
Sn
Pb
N P As
Sb
Bi
O S Se
Te
Po
F Cl
Br I At
Ne
Ar
Kr
Xe
Rn
He
Ato
mic
Num
ber
Sym
bo
l
Nam
e
Mola
r m
ass in
g m
ol–
1
Peri
od
Ke
y
Gro
up
TH
E P
ER
IOD
IC T
AB
LE
12
34
56
70
1 2 3 4 5 6 7
La
nth
an
ide
ele
me
nts
Ac
tin
ide
ele
me
nts
