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The aqueous solution of the following sa...

The aqueous solution of the following salts will be colored in the case of

A

`Zn(NO_3)_2`

B

`LiNO_3`

C

`Co(NO_3)_2`

D

`CrCl_3`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`Co^(2+)`:
`Co(Z=27)=3d^74s^2`
`Co^(2+)=3d^7`
Two unpaired electrons are present
`Cr(Z=24)=3d^54s^1`
`Cr^(3+)=3d^3`
`CoNO_3)_2` and `CrCl_3` has unpaired electron, hence they are coloured.
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