Question

what is Variable Valency ?​

Answer 1

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The variable valency is an atom is equal to the valence electrons, if it is 4 or less.

The electrons present in the outermost shell of an atom are called valence electrons.

For example : iron combines with oxygen to form ferrous oxide as well as ferric oxide.

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

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