Question

1. Draw the Lewis Structure for the following molecules and ions and calculate their formal charge. If there is more than one possible Lewis structure, choose the one most likely preferred.

a. NO⁺

b. CH₃CH₂O^-

c. CH₂O

d. HCN

e. NCO^-

2. Draw all the contributing resonance structures for the following. Show the formal charges. Choose the most preferred structure. Choose the least preferred structure. Explain your reasoning.

a. Chlorate ion (ClO₃^-)

b. Hydrazoic acid, HNNN

c. OCN^-

d. NO₂^-

3. BF₃ has four resonance structures. Draw them all and explain why each structure is viable.