Question

explain the formation of anion and cation in ionic compound through example and symbol.(formulae)

Answer 1

Na -1e=Na1+
Cl+1e=Cl1-

Answer 2

Na+ has its outer most shell i.e valency 1
and Cl- has its valency 7

So, Na+ give its ion to Cl- to complete its octave and form NaCl ....