Q. 714.3( 7 Votes )
The atom of an el
(a) The electronic configuration of element X is 2, 8, 7.
(b) The atomic number of element X is 17.
(c) Element X is a non-metal.
(d) Anion will be formed by an atom of element X. The symbol of the ion formed will be X−.
(e) It should must be chlorine (Cl).
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