Question

Which of the following contains polar and non-polar bonds?

• A.
• B. HCN
• C.
• D.

Answer 1

The correct option is C

In $N{H}_{4}Cl$, the N-H bond is polar due to appreciable electronegativity difference between

N (3.0) and H (2.1). In HCN, the H-C and C-N bonds are polar due to electronegativity

difference between C (2.5) and N (3.0) for H-C bond as well as between C (2.5) and H

In $H_2{O}_2$, the O-H bond is polar due to electronegativity difference between O (3.5) and H (2.1).

Whereas, O-O bond is non-polar. In $C{H}_4$, the C-H bonds are also polar. Hence correct option

Is (c )