Question

Identify the species which obey the octet rule for every atom. (The central atoms are underlined).

a. ClO3- (Cl is underlined)
b. SO2 (S is underlined)
c. NO2+ (N is underlined)
d. NO2 (N is underlined)
e. ClO- (Cl is underlined)

Answer 1

I don't think it will do you any good for me to give you the answers. If you have a specific problem about how to do them try posting that question. You really need to learn to do these yourself.
For starters, Cl has an octet in ClO3^-.
I believe S has an octet in SO2 but check me out on both of those.

Answer 2

SO2