If molecule `MX_3` has zero dipole moment, the sigma bonding orbitals used by M (atomic number `lt21`) are

Options

A. `sp^3 d`- hybrid
B. sp - hybrid
C. `sp^3 d^2` - hybrid
D. `sp^2` - hybrid

Answer

D

Explanation

In `sp^2` hybridization with no lone pair of electrons, the geometry of the molecule `MX_3` will be trigonal planar. So the dipole moment will cancel each other. The net dipole moment will be zero.