Chemistry, asked by prathamgupta33068, 9 months ago

URGENT! PLZZZZZZZZZZZZSZZ

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Answered by sujathakotireke

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electrons left in outermost shell is called valency

elements having different types of valencies is called variable valency

e.g. Fe2,Fe3,Higher value will have ic at last like ferric and lower value will have ous at last like ferrous

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