Question

Write the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:

Answer 1

Answer and Explanation :

Paramagnetic are those which has unpaired electrons and diamagnetic are those in which all electrons are paired.

(a) V³⁺

The electronic configuration is -  

$[Ar]3d^1$

The electrons in 3d orbital = 1 (Unpaired)

Thus, the ion is paramagnetic as the electrons are unpaired.

(b) Cd²⁺

The electronic configuration is -  

$[Kr]4d^{10}$

The electrons in 4d orbital = 10 (paired)

Thus, the ion is diamagnetic as the electrons are paired.

(c) Co³⁺

The electronic configuration is -  

$[Ar]3d^6$

The electrons in 3d orbital = 6 (Unpaired)

Thus, the ion is paramagnetic as the electrons are unpaired.

(d) Ag⁺

The electronic configuration is -  

$[Kr]4d^{10}$

The electrons in 4d orbital = 10 (paired)

Thus, the ion is diamagnetic as the electrons are paired.