Question

Which pair of molecules is not a polar bond?
a) N-O
b) C-O
c) O-H
d) O-O

Answer 1

The pair of molecules that is not a polar bond is d) O-O. Oxygen is a nonpolar molecule because the two oxygen atoms pull on the electrons by exactly the same amount, resulting in a symmetric molecule. Therefore, the O-O bond is nonpolar.

Step-by-step explanation:

The pair of molecules that is not a polar bond is d) O-O. Oxygen is a nonpolar molecule because the two oxygen atoms pull on the electrons by exactly the same amount, resulting in a symmetric molecule. Therefore, the O-O bond is nonpolar.