Choose the bond that is the weakest:

Question

A) Na-Cl
B) I-I
C) C=N
D) Li-F
E) C=O

I don't understand the question... do they mean polarity wise, IMF wise or bond length wise.

I know the answer is C but why C.

Answer 1

I think they mean bond wise. I would pick C because its the odd ball in the group. We know I-I is a good covalent bond, LiF and NaCl are ionic bonds and C=O is quite polar. I tried drawing a Lewis structure for C=N and it doesn't have an even number of electrons.

Answer 2

thank u sooo much :D