Question

1)Use the periodic table to identify the element with the following electron configuration. Spell out the full name of the element.

a)[Ne]3s1

b)[Kr]5s24d10

c)[Xe]6s2

d)[Kr]5s24d105p3

2)Express your answer as a chemical formula. Use Lewis theory to determine for the compound that forms from:

a) Al and S

b)Na and S

c)Sr and Se

d)Ba and F

3)Determine the number of electron groups around the central atom for each of the following molecules. Express your answer as an integer.

a)OF₂

b)NF₃

c)CS₂

d)CH₄

4) Express your answer using three significant figures. Determine the bond angle for

a)N20 (oxygen is terminal)

b)SO₂

c)H₂S

d)PF₃

Answer 1