Question

If true enter 1, else enter 0.
The dipole moment of ${CH}_{3}F$ is greater than that of ${CH}_{3}Cl$.

• A. 0

Answer 1

The correct option is A 0

$C{H}_{3}Cl$ has larger dipole moment than $C{H}_{3}F$ because dipole moment is based on the product of distance and charge, and not just charge alone.

Fluorine is more electronegative than chlorine, but, the carbon-fluorine bond is also much shorter than the carbon-chlorine bond: 139 pm vs 178 pm. That's why the dipole moment of chloromethane is higher than the dipole moment of fluoromethane.