Question

`[Cr(H_2 O)_6]Cl_3` (at no. of Cr = 24) has a magnetic moment of `3.83 B.M`. The correct distribution of `3d` electrons the chromium of the complex.
A. (a) `3d_(xy)^1, 3d_(yz)^1, 3d_(xz)^1`
B. (b) `3d_(xy)^1, 3d_(yz)^1, 3d_(z^2)^1`
C. (c) `(3d_(x^2-y^2)^1), 3d_(z^2)^1, 3d_(xz)^1`
D. (d) `3d_(xy)^1, (3d_(x^2-y^2)^1), 3d_(yz)^1`

Answer 1

Correct Answer - A
`Cr^(3+): 1s^2 2p^2 2p^6, 3s^2sp^(6) 3d^3`. The `3d_(xy)^1, 3d_(zx)^1, 3d_(yz)^1` has lower energy.
`Cr^(3+)` is `3d^3` in presence of