Question

Which one of the following ions has the maximum magnetic moment?
(a) Sc³⁺
(b) Ti³⁺
(c) Cr³⁺
(d) Fe³⁺

Answer 1

Magnetic moment depends on no. of unpaired electrons..

Sc3+ has no unpaired electrons

Ti3+ has 1 unpaired electrons

Cr3+ has 3 unpaired electrons

And

Fe3+ has 5 unpaired electrons..

Therefore Fe3+ has maximum magnetic moment..

I hope u get ur answer...