How much does number of (i) valence electrons (ii) valency vary on moving left to right a)in the second period of a periodic table b)in the third period of a periodic table
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On moving from left to right in the second period, the number of valence electrons increases from 1 (Li) to 8 (Ne), whereas the valency increases from 1 (Li) to 4 (C) and then decreases from 4 to 0 (Ne).
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a) it increase that the valencr electron
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