An element belongs to `3^(rd)` period and group 17 of the modern periodic table, find out: (a) The number of valence electrons a

An element belongs to `3^(rd)` period and group 17 of the modern periodic table, find out:
(a) The number of valence electrons and valency
(b) Lewis structure of its compound with hydrogen
(c) Electronic configuration of this element

An element belongs to `3^(rd)` period and group 17 of the modern periodic table, find out: (a) The number of valence electrons and valency (b) Lewis s

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