Science, asked by samiakhtar89361, 10 months ago

how does valency of an element very across a period

Answers

Answered by sneha1726

Answer:

#answer with quality #bal

Explanation:

The number of valence electrons increases by one as we move from left to right in a period. The group number 1 and 2 have 1 and 2 valence electrons respectively while group 13 to 18 have group number minus 10 = valence electrons. ... (ii) Valency is determined by the number of valence electrons.

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