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Given are the nickel compounds Ni(CO4), ...

Given are the nickel compounds `Ni(CO_4), K_2[NiF_6)` and `K_2 [Ni(CN)_4]`. The order of compounds having increasing oxidation number of nickel is : `Ni(CO)_4 lt K_2 [NiF_6] lt K_2 [Ni(CN)_4]`, `Ni(CO)_4 lt K_2 [Ni(CN)_4] lt K_2 [NiF_6]`, `K_2 [Ni(CN)_6] lt K_2[NiF_6] lt Ni(CO)_4`, `K_2 [Ni(CN)_6] lt Ni(CO)_4 lt K_2 [NiF_6]`

A

`Ni(CO)_4 lt K_2 [NiF_6] lt K_2 [Ni(CN)_4]`

B

`Ni(CO)_4 lt K_2 [Ni(CN)_4] lt K_2 [NiF_6]`

C

`K_2 [Ni(CN)_6] lt K_2[NiF_6] lt Ni(CO)_4`

D

`K_2 [Ni(CN)_6] lt Ni(CO)_4 lt K_2 [NiF_6]`

Text Solution

Verified by Experts

The correct Answer is:
B
The oxidation number of nickel in `Ni(CO)_4, K_2[Ni(CN)_4]` and `K_2[NiF_6]` are 0,+2 and -4 respectively.
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