Amongst the ion of 3d transition series paramagnetic character increases from `Ti^(2+)` to

Options

A. `Cr^(+2)`
B. `Mn^(+2)`
C. `Ni^(+2)`
D. `Fe^(+2)`

Answer

B

Explanation

`Cr^(2+) to [Ar] 4s^0 3d^3 , Ni^(2+) to [Ar] 4s^0 3d^8`, `Fe^(2+) to [Ar] 4s^0 3d^6 , Mn^(2+) to [Ar] 4s^0 3d^5`
No. of unpaired `e^-` increases from `Fe^(2+)` (1) to `Cr^(3+)` (3), `Ni^(2+)` (3) to `Mn^(2+)` (5)