What is the number of `d` electrons in `Cr^(3+)` ions?

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

The number of d-electrons in Fe^(2+) ion is

The orbital configuration of ._(24)Cr is 3d^(5) 4s^(1) . The number of unpaired electrons in Cr^(3+) (g) is

The orbital configuration of ._(24)Cr is 3d^(5) 4s^(1) . The number of unpaired electrons in Cr^(3+) (g) is

Calculate the number of unpaired electrons in Cr^(3+) and V^(3+) ions.