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Among the following, the compound that i...

Among the following, the compound that is both paramagnetic and coloured is -

A

`K_(2)Cr_(2)O_(7)`

B

`(NH_(4))_(2)[TiCl_(6)]`

C

`VOSO_(4)`

D

`K_(3)Cu(CN)_(4)]`

Text Solution

Verified by Experts

The correct Answer is:
C
`K_(2)Cr_(2)O_(7)rarr Cr^(6+): 3d^(0)`
`(NH_(4))_(2)[TiCl_(6)]rarr Ti^(4+):3d^(0)`
`VOSO_(4)rarr V^(4+): 3d^(1)`
`K_(3)[Cu(CN)_(4)]rarr Cu^(+): 3d^(10)`
`VOSO_(4)`, due to the presence of one unpaired electron in 3d - orbital, is paramagnetic and coloured.
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