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In which of the following compound the highest valency of copper is equal to the lower valency of other metals?

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AuCl₃

FeCl₂

SnCl₂

Both B and C

answer is D.

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Detailed Solution

In $F e C l_{2}$ valency of Fe is 2, and it's the lower valency

In $S n C l_{2}$ valency of Sn is 2, and it's the lower valency.

$C u C l_{2}$ valency of Cu is 2, and it's the higher valency.

So higher valency of copper is equal to the lower valency of Fe and Sn.

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