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Q.

The oxidation state of the metal forming the complex K2[PtCl6] is

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a

+3

b

+4

c

+2

d

+1

answer is D.

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Detailed Solution

Let X be the oxidation number of  Pt in [PtCl6​]2−.
The Cl atoms have oxidation number of -1.
X+6(−1)=−2
X−6=−2
X=+4
The oxidation number of  Pt in [PtCl6​]2− is +4

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