The total number of isomers for a square planar

Question:

The total number of isomers for a square planar complex $\left[\mathrm{M}(\mathrm{F})(\mathrm{Cl})(\mathrm{SCN})\left(\mathrm{NO}_{2}\right)\right]$ is :

1. 12

2. 8

3. 16

4. 4

Correct Option: 1

Solution:

The total number of isomers for a square planar complex $\left[\mathrm{M}(\mathrm{F})(\mathrm{Cl})(\mathrm{SCN})\left(\mathrm{NO}_{2}\right)\right]$ is 12 .