Calculate the ‘spin only’ magnetic moment of `M^(2+)` (aq) ion (Atomic number Z of M= 27)

Explanation

Electronic configuration of `M=[Ar]3d^7 4s^2` Outer electronic configuration of `M^(2+)=3d^7` i.e. `therefore` Number of unpaired electrons =3 `therefore` Spin only mangnetic moment `sqrt(n(n+2))=sqrt(3(3+3))=sqrt(15)=3.87` BM