Question

Which of the following bonds is least polar?

C-C, C-N, C-O, C-H
со
CC
C-N
C-H

Answer 1

The least polar bond among C-C, C-N, C-O, and C-H is the C-C bond because it involves two atoms with identical electronegativity, resulting in equal sharing of electrons and therefore a nonpolar covalent bond. The correct answer is option 2.

Step-by-step explanation:

The bond that is least polar among C-C, C-N, C-O, and C-H is the C-C bond. Polar bonds occur between two atoms with a significant difference in electronegativity. Carbon atoms have identical electronegativity, hence a C-C bond shares electrons evenly and is considered a nonpolar covalent bond. Compared to C-C, C-N and C-O bonds are definitely polar covalent because nitrogen and oxygen are more electronegative than carbon, respectively. The C-H bond is minimally polar but still exhibits some degree of polarity.