Question

Highest valency of CU
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Answer 1

Answer:

Copper is one of the transition elements and thus exhibits variable oxidation states. It has two valencies: +1 and +2 and the corresponding atoms are termed as Cuperous (+1 valency) and Cupric (+2 valency).

Explanation:

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Answer 2

Copper is one of the transition metals so it possess more than oxidation states. Correspondingly it has 2 valencies +1 and +2 that is cuperous and cupric respectively.