Schottky Defect

chemistry

#1

Which of these CaCl2 or NaCl will produce Schottky Defect when added to AgCl and why?

I know NaCl is answer (may be) but what is the reason for it?


#2

Ca is divalent cation and silver is univalent cation.

When CaCl2 is mixed with AgCl, then one Ca^+2 ion will replace two Ag^+ ions. It will create a vacancy in place of one Ag^+ ion and so there will be Schottkey defect in the compound.