It is non experimental fact that `Cs_(2)[CuCl_(4)]` is orange coloured but `(NH_(4))_(2)[CuCl_(4)]` is yellow. It is further known that total paramagnetic moment of a unpaired electron is due to spin as well as due to nature of orbital , 'd' orbital contributing more than 's' or 'p'. Thus the total paramgentic moment of orange compound is found to be more than that of yellow compound. Then which of the following is correct?

Options

A. Anion of orange compound is tetrahedral and that of yellow is square planar
B. Anion of orange compound is square planar and that of yellow is tetrahedral
C. Both the anions are tetrahedral
D. Both the anions are square planar.

Answer

A

Explanation

`Cs_(2)[CuCl_(4)]` (orange) is tetrahedral because in Cu(III) the unpaired electrons is in 3d. But `(NH_(4))_(2)[CuCl_(4)]` (yellow) is square planar because the unpaired electron is not in 3d rather in some promoted state 's' or 'p'.