Question

1) Which compound or ion below MUST expand the octet on thecentral atom. Select all that apply.

Select one or more:

A. carbon dioxide

B. sulfur dioxide

C. xenon difluoride

D. sulfur tetrafluoride

E. perchlorate

2) Draw the Lewis structure for SO₂. How manyresonance structures have a zero formal charge on all atoms?

3)Draw the Lewis structure for carbonate such that all atomshave an octet. How many resonance structures does it have?

Select one:

A. 0

B. 1

C. 2

D. 3

E. 4

4)Which compounds or ions below MUST have an atom with fewerthan an octet? Check all that apply.

Select one or more:

A. NO

B. ammonium ion

C. chlorine dioxide

D. HBrO

E. HCCH

5. Draw the lewis structure of ammonium ion. What is the formalcharge on the N?