The value of the magnetic moment of a particular ion is `2.83` Bohr magneton. The ion is :-
(a). `Fe^(2+)`
(b). `Ni^(2+)`
(c). `Mn^(2+)`
(d). `Co^(3+)`

Options

A. `Fe^(2+)`
B. `Ni^(2+)`
C. `Mn^(2+)`
D. `Co^(3+)`

Answer

B

Explanation

`mu = sqrt(n(n+2))` Where `n = 2`