Question

show the formation of kcl by the transfer of electrons

Answer 1

KCl 

atomic number of K (potassium) - 13 
electronic configuration- 2,8,8,1 

atomic number of Cl- 17 
electronic configuration- 2,8,7 

K has 1 in valence shell and Cl has 7 in its valence shell.. so K will give 1 to Cl 

K -> K+ + 1e 
Cl + 1e -> Cl-
I hope it help you....