Identify the order in which the spin only magnetic moment (in BM) increases for the following four ions
I) `Fe^(+2)` , II) `Ti^(+2)` , III) `Cu^(+2)` , IV) `V^(+2)`

Options

A. I,II,IV,III
B. IV,I,II,III
C. III,IV,I,II
D. III,II,IV,I

Answer

D

Explanation

with increase in number of unpaired electrons magnetic moment increases `(mu = sqrt(n(n+2)))`