According to crystal field therory the electronic configuration of the `[Cr(H_(2)O)_(6)]^(2+)` ion when `(Delta ltP)`
`(Delta = CFSE, P= "Pairing energy")` .

Options

A. `3 (t_(2g)^(3) e_(g)^(1))`
B. `4 (t_(2g)^(3) e_(g)^(1))`
C. `3(e_(g)^(1) t_(2g)^(1))`
D. `3(e_(g)^(3) t_(2g)^(1))`

Answer

a

Explanation

Octahedralcomplex when `(DeltaltP)` (weak field) (high spin state) (No pairing)`
`Cr =3d^(5) 4s^(1)` ,`Cr^(+2) =3d^(4)` :. Structure `= 3(t_(2g)^(2)`e_(g)^(1))` .