NOTES – NOV 27 WRITE IT DOWN. An unidentified element has many of the same physical and chemical...

NOTES – NOV 27

WRITE IT DOWN

• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?

• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?

• An unidentified element has many of the same physical and chemical properties as fluorine and chlorine but has a lower atomic mass than either of these elements. What are the POSSIBLE ELEMENTS that fit the description?

• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?

• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?

• The bonding characteristics of Sodium (Na) are most similar to the bonding characteristics of what elements?

• COLOR in the UNREACTIVE Group (won’t bond with anything)

• COLOR in the UNREACTIVE Group (won’t bond with anything)

• Color in the HALOGENS that form HALIDES

• Color in the HALOGENS that form HALIDES

• COLOR in the group that requires the least energy to form a bond

• COLOR in the group that requires the least energy to form a bond

• A measure of the ability of a bonded atom to attract electrons to itself is its’?

• A measure of the ability of a bonded atom to attract electrons to itself is its’?

•ELECTRONEGATIVITY

• Write 1 trends that shows INCREASING atomic radii

• Write 1 trends that shows INCREASING atomic radii

• WRITE ANOTHER trend that shows INCREASING atomic radii

• WRITE ANOTHER trend that shows INCREASING atomic radii

• What is the difference between an ion and an atom?

• What is the difference between an ion and an atom?

• IONS = have a charge•ATOMS = neutral

• How many valence electrons do all ions want?

• How many valence electrons do all ions want?

8

• If I have 7 valence electrons am I likely to gain an electron or lose the 7 electrons?

• If I have 7 valence electrons am I likely to gain an electron or lose the 7 electrons?

• Easier to gain 1 then lose 7

• If I have 2 valence electrons….am I likely to gain 6 valence electrons or lose the 2 electrons?

• If I have 2 valence electrons….am I likely to gain 6 valence electrons or lose the 2 electrons?

• Easier to lose 2 then try to get 6 more……

• How many valence electrons does group 16 have (it is not 16)

• How many valence electrons does group 16 have (it is not 16)

6

• How many valence electrons does group 2 have?

• How many valence electrons does group 2 have?

2

• DO we EVER talk about valence electrons in the middle (transitional metals)?

• DO we EVER talk about valence electrons in the middle (transitional metals)?

• NO....NO….NO…NO…and ….NO (only the FIXED charge groups)

• SHOULD you ever assume that LIKE Group 3….has 3 valence electrons

• SHOULD you ever assume that LIKE Group 3….has 3 valence electrons

• (the answer is no ….no..no.. no..and no)

•Which group does not need any more VALENCE electrons?

•Which group does not need any more VALENCE electrons?

• GROUP 18 (NOBLE GASES)

•Nitrogen =

•Nitrogen = Nitride

•Sulfur =

•Sulfur = Sulfide

•Oxygen =

•Oxygen = Oxide

•Fluorine =

•Fluorine = Fluoride

•Arsenic =

•Arsenic = Arsenide

•Iodine =

•Iodine = Iodide

MOST IMPORTANT

DO you know the charge of GROUP 1 and 2?

MOST IMPORTANT

DO you know the charge of GROUP 1 and 2?

WHY EVER USE A ROMAN NUMERAL on those groups then…..