Science, asked by nihagiyra6s3arma, 1 year ago

How to calculate the valency of an element in periodic table?

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Answered by ramachandra1

first group elements have valency one.second group two.thirteenth group three.fourteenth group four.fifteenth group five or three.sixteenth group two.seventeenth group one. eighteenth group zero.d and f block elements have variable valency.

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