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(55) What is the periodic trend in thevariation of valency while going from left toright within a period? Explain your answer withreference to the period 2 and period 3.Ans |
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Answer» While moving left to right across a period, the number of valence electrons of elements increases and varies between 1 to 8. Valency first increases and then decreases. Valency increases from 1 to 4 and then decreases. |
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