$(i)\, KCl$ અથવા $MgO$ $(ii) \,LiF$ અથવા $LiBr$ $(iii)\, Mg_3N_2$ અથવા $NaCl$
$p _x, p _y, p _z d _{x y}, d _{y z}, d _{x z}, d _z{ }^2, d _x{ }^2-y^2$