Question

The complexes K2[NiF6] and K2[NiCl4] are​? ​

Answer 1

Answer:

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Explanation:

Here, [Ni(CN)4] complex is anion having charge -2 since, K2[Ni(CN)4] will dissociate into three ions viz. two ions of K+ and one ion of [Ni(CN)4]2-.

Let oxidation state of Ni be x.

Cyanato (-CN) has -1 oxidation state.

So, x + 4(-1) = -2

x -4 = -2

x = +2.

Hence, Ni has +2 oxidation state in K2[Ni(CN)4].