Question

Put tick () against correct choice and cross () against wrong choice in the following question:

Number of valence electrons in Cl⁻ ion are:

(a) 16

(b) 8

(c) 17

(d) 18

Answer 1

Valence electrons of chloride ion:

1. ​The single chlorine atom has 7 valence electrons.
   
2. As the chlorine forms a chloride ion, there is an addition of an electron which enters the atom.
   
3. This makes the valence electron count of the chloride ion to be (7+1) = 8 electrons.
   

Final Answer: Number of valence electrons in Cl⁻ ion are:

(a) 16

(b) 8

(c) 17

(d) 18