Question

Which one of the following pairs of molecules will have permanent dipole moments for both members?

(a) SiF₄ and NO₂ 

(b) NO₂ and CO₂

(c) NO₂ and O₃ 

(d) SiF₄ and CO₂.

Answer 1

Correct option(c) NO₂ and O₃ 

Explanation:

Both NO₂ and O₃ have angular geometry, thus possess a permanent dipole moment. While SiF₄ possesses a regular tetrahedral structure and CO₂ possesses a linear structure. ln SiF₄ and CO₂, the individual dipoles on the Si-F and O bonds cancel and the molecules have no dipole moment.