Transition elements show magnetic moment due to spin and orbital motion of electrons. Which of the following metallic ions have almost same spin only magnetic moment?

Options

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

Answer

A, D

Explanation

`Co^(2+) (d^7)` and `Cr^(3+) (d^3)` have same number of unpaired electrons