Question

Which molecule contains a nonpolar covalent bond?

A) H2
B) NH3
C) H₂O
D) CO

Answer 1

H2, If you draw out all of the molecules Lewis structures they all contain a lone pair indicating they’re polar. H2 doesn’t have a lone pair because Hydrogen doesn’t follow the octect rule. So, it’s A.

Answer 2

B, C, and D are polar, so the answer would b A) H2