Which of the following having same value of magnetic moment?

Options

A. `Mn^(2+) &Na^(+)`
B. `Co^(3+) & Fe^(2+)`
C. `Zn^(2+) & Cl`
D. `Zn^(2+) & Na^(+)`

Answer

BD

Explanation

`Co^(+3) & Fe^(2+) =[Ar]3d^(6)`
`Zn^(2+)=[Ar]3d^(10)`
`Na^(+)=[Ne]`