electronic configuration of an atom of an element is 2, 8, 18, 17 respectively. (a) find the
group number of x? (b) in which of the period and group this element is included in the periodic table? (c) write the family name of this atom?
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(a) Since, it has 6 valence electrons, it belongs to group no. 16.
(b) It has 3 Valence shells, so it belongs to period no 3.
(c) The number of valence electron is 6.
(d) The valency of E is 2 because it requires 2 electrons to achieve its stability .
(e) It is a non-metal.
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