Valency of copper is ........?

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it shows variable valency according to the requirement of rxn. So u can not say that it has fixed valency, both valency +1,+2 are stable for Cu.
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2
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+1 and +2, it depends on compound which will be formed.
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The valency of Copper is +1 and +2.
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Have 3+ years of experience in teaching cbse students up to class x for mathematics, science & computers

Copper shows a valency of both 1 and 2.
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"Read , Recall and Procure"

1 n 2
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Maths, Science And Engineering Subjects

copper has variable valency of +1 and +2
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Copper shows +1 and +2 oxidation state so it has both valencies.Cu with +1 called cuprous ion and Cu with +2 valency called cupric ion
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The valency of copper is 2
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A teacher with 18 years of experience.The subjects are Economics, Maths and Science.

The valency of copper is +1 and +2.
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