What is number of unpaired electrons in `V^(3+)` ion ?

Explanation

The electronic configuration of V atom is `[Ar] 3d^(3) 4s^(2)`
`therefore` The electronic configuration of `V^(3+)` ion is `[Ar] 3d^(2)`
`therefore` The number of unpaired electrons in `V^(3+)` ion is 2 .