PES and Lewis

Multiple Choice

Examine the spectrum below. Where would you expect the 2p peak for F be if it were on the same spectrum?

• To the left of the peak at 3.04

• To the right of the peak at 3.04

• To the left of the peak at 1.31

• To the right of the peak at 1.31

Multiple Choice

What does the 4th peak from the left represent?

• The 2s electrons

• The 3d electrons

• The 2p electrons

• The 3s electrons

Multiple Choice

Which peak (or peaks) correspond to the valence electrons?

• The peak at 1

• The peaks at 1 and 2.05

• The peak at 239

• The peaks at 239 and 22.7

Multiple Choice

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

Multiple Choice

3. Which is a correct Lewis structure for hydrogen cyanide, HCN?

Multiple Choice

 5. Which one of the following violates the octet rule?

• PCl₃

• CBr₄

• NF₃

• AsF₅

Multiple Choice

The following species are exception to octet rule EXCEPT

• $$I_3^{\ -}$$  

• $$NH_4^{\ +}$$  

• $$XeF_4$$  

• $$SF_4$$  

Multiple Choice

How many bonding pairs of electrons are in CH3COOH

• 5

• 7

• 8

• 10