The isoelectronic pair of ions is -

Options

A. `Sc^(2+) and V^(3+)`
B. `Mn^(2+) and Fe^(3+)`
C. `Mn^(3+) and Fe^(2+)`
D. `Ni^(3+) and Fe^(2+)`

Answer

B

Explanation

`Mn^(+2) = 23 e^(-)`
`Fe^(+3) = 23 e^(-)`