In which of the following molecules `mu`(oberved) is found to be greater than `mu` (theoretical):

Options

A. `CHCl_(3)`
B.
C.
D.

Answer

D

Explanation

Due to steric repulsion among Cl-atoms observed `angleClCCl` is found to be greater than expected.

Bond angle between both `C-Cl` bonds is greater than `60^(@)` due to steric repulsion between both Cl-atom, hence `mu_(D)("observed")ltu_(D)("theoretical")`

Observed bond angle between both `C-NO_(2)` bonds is found to be greater than `60^(@)` due to steric repulsion between `NO_(2)` groups, hence `mu_(D)("observed")ltu_(D)("theoretical")`

Observed bond angle between both `C-O and C-Cl ` bonds is found to be less than `60^(@)` due to intramolecular H-bonding present in it, hence `mu_(D)("observed")ltu_(D)("theoretical")`