Question

Question 17
Number of valence electrons in $C{l}^{-}$ ion is:

(a) 16
(b) 8
(c) 17
(d) 18

Answer 1

(b) 8

Number of valence electrons in $C{l}^{-}$ ion is 8 (a valence electron is an electron that is associated with an atom, and that can participate in the formation of a chemical bond; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair).