Three elements X,Y,Z,belong to17th group but 2 nd,3rd,4th period respectively. Number of valance electrons in Y is 7 .find the number of valance electrons in X and Z.
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valence electrons in X and Z is 7
as valency remains the same down the group
I hope this will you. please mark it brainleist
as valency remains the same down the group
I hope this will you. please mark it brainleist
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