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The number of d-electrons in [Cr(H(2)O)(...

The number of d-electrons in `[Cr(H_(2)O)_(6)]^(3+)` [At. No. of Cr = 24 ] is

A

2

B

3

C

4

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
Cr(Z = 24) : `[Ar]^(18)4s^(1)3d^(5)`
`Cr^(3+)` : `[Ar]^(18) 3d^(3)`
Hybridisation is `d^(2)sp^(3)`. Complex is paramagnetic with three unpaired electrons in d-subshell.
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