Chemistry, asked by richa9960, 10 months ago

atom has a configuration 2,8,7 a) name the group and period to which belongs . b) out of there which elements are chemically similar N(7) , F(9), P(5)

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Answered by likhitha77

3

element is chlorine
it belongs to 17th group and 3rd period
F(9) is chemically similar

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