Question

wht is variable valancy??​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

Some elements join with other atoms to give, accept or exchange electrons in different amounts depending on the essence of the reaction. For starters, iron combines with oxygen to form both ferrous oxide and ferric oxide. It is called valence element.