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A certain sample of cuprous sulphide is ...

A certain sample of cuprous sulphide is found to have composition `Cu_(1.8)S,`, because of incorporation of `Cu^(2+)` ion in the lattice, What is the mole % of `Cu^(2+)` in total content in this crystal?

A

88.88

B

89.8

C

`63.5%`

D

11.11

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The correct Answer is:
D
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