Question

-. Explain the term 'variable valency'. Copper having electronic configuration 2, 8, 18, 1 exhibits
variable valency. Give a reason for the same & name the compound CuCl & CuCl2​

Answer 1

Explanation:

Variable valency is the property of an element’s atoms to exhibit different valencies at different circumstances.

This occurs due to different ways of distributing electrons in 4s and 3d electron orbitals as they are almost similar in energy.

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Answer 2

Answer:

it's because of theelectrin losing capacity of copper as sometimes it loses 1 and some times 2 electron that's why some time its valence is1 or2

Explanation:

CuCl is cuprous chloride and CuCl2 is cupric chloride