Question

how valency of element varies when we go from left to right in a period of periodic table​

Answer 1

Valency increases from 1 to 4 and then reduces to zero when we move from left to right across a period. Number of valence electrons increases from 1 to 8 when we move from left to right across a period.

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Answer 2

Answer:

1to4 ,1to8

Explanation:

move from left to right across a period