Science, asked by sonukumar5365, 1 year ago

an element X belongs to 3rd period and group 17 of the periodic table.state its electronic configuration and valency.justify your answer with reasoning

Answers

Answered by AzharMunna

3

17 th group contains halogens.Element in the period and in 17 th group is chlorine.Its atomic number is 17.
2,8,7 is its E.C
valency is one

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