A sodium and chlorine atom are near each other ... The +2 calcium ion and the two -1 chloride ions attract each other and form an ionic bond and the compound calcium chloride. One calcium and two ...

The basis is two ions, a sodium cation and a chlorine anion. The crystal lattice parameter ... and a term due to the zero point energy of 0.075 eV. Because of its ionic bonding the material is an ...

Here’s an example using sodium and chlorine. They form ions which bond ... and cross diagrams for the formation of ions in some ionic compounds – magnesium oxide and calcium chloride.