$(a)\, AlF_3 > MgF_2$ [Charge on cation]
$(b)\, Li_3N > Li_2O$ [Charge on anion]
$(c)\, NaCl > LiF$ [Size of cation and anion]
$(d)\, TiC > ScN$ [Charge on cation and anion]
$p _x, p _y, p _z d _{x y}, d _{y z}, d _{x z}, d _z{ }^2, d _x{ }^2-y^2$
$(i)\, KCl$ અથવા $MgO$ $(ii) \,LiF$ અથવા $LiBr$ $(iii)\, Mg_3N_2$ અથવા $NaCl$