The number of unpaired electrons in gasesous species of `Mn^(3+), Cr^(3+)" and " V^(3+)` respectively are _________ and the most stable species is _________ .

Options

A. 4,3 and 2 and `V^(3+)` is most stable
B. 3,3 and 2 and `Cr^(3+)` is most stable
C. 4,3 and 2 and `Cr^(3+)` is most stable
D. 3,7 and 3 and `Mn^(3+)` is most stable

Answer

C

Explanation

`Mn^(3+) =[Ar]^(18) 3d^(4) , Cr^(3+) =[Ar]^(18) 3d^(3)`
`V^(3+) =[Ar]^(18) 3d^(2)`