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Variable Valency

Copper exhibi...

Question

Copper exhibits two types of valencies. Their sum is:

A

3

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B

4

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C

5

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D

6

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Solution

The correct option is A
3

Copper exhibits two types of valencies. They are +1 and +2. Copper when exhibits +1 valency is called as cuprous and when it exhibits +2 valency is called as cupric.

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