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The aqueous solution of the following sa...

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

A

`Zn(NO_(3))_(2)`

B

`LiNO_(3)`

C

`Co(NO_(3))_(2)`

D

`CrCl_(3)`.

Text Solution

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The correct Answer is:
C, D
(c,d) `Co(NO_(3))_(2)" and "CrCl_(3)` are coloured because both `Co^(2+)" and "Cr^(3+)` ions have unpaired electrons. `Zn(NO_(3))_(2)" and "LiNO_(3)` are colourless because both `Zn^(2+)" and "Li^(+)` ions have no unpaired electrons.
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