Question

Predict the number of unpaired electrons in a tetrahedral d${}^6$ ion and in square planar d${}^7$ ion.
Note: [If answer is 1 and 2, then represent as 12.]

Answer 1

The number of unpaired electrons in a tetrahedral d${}^6$ ion is 4 .
The number of unpaired electrons in square planar d${}^7$ ion is 1.
Electronic distribution in a tetrahedral d${}^6$ ion is $e_g^3{t}_{2g}^3$.
Number of unpaired electrons is 4
Electronic distribution in square planar d${}^7$ ion $d_{yz}^2{d}_{zx}^2{d}_{z^2}^2{d}_{xy}^1{d}_{x^2-y^2}^0$.
Number of unpaired electrons is 1