Question

Which among the following solids is a nonpolar solid?

• A. Hydrogen chloride
• B. Sulphur dioxide
• C. Water
• D. Carbon dioxide

Answer 1

The correct option is D Carbon dioxide

Bonds that are partly ionic are called polar covalent bonds.

Nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

The molecule $C{O}_2$ is linear and the two bond dipole moments are oriented $180$ degrees with respect to one another and cancel each other out, so overall the molecule does not have a dipole moment and is non-polar.

All other molecules are polar solids.