Question

what is variable valency​

Answer 1

Answer:

Metals donate electrons from their valence shell so as to form positively charged ions such that the charge on the ion is equal to its electropositive valency. In such a situation the element exhibits more than one valency (variable valency)

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Answer 2

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➢ Certain elements combine with other atoms, donating, accepting or sharing electrons in different proportions depending on the nature of the reaction. For example, iron combines with oxygen to form ferrous oxide as well as ferric oxide. This is termed variable valency.

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