Calcium becomes a +2 ion and each chlorine becomes a -1 ion. 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 ...

A 3D construction model shows how the ions are arranged in a lattice structure. These models usually use coloured balls to represent the ions. Some use sticks to show the ionic bonds. A 3D ...

Ionic compounds close ionic compoundAn ionic compound occurs when a negative ion (an atom that has gained an electron) joins with a positive ion (an atom that has lost an electron). form a regular ...

and a space filling model (b) of ionic hard spheres. The cohesive energy of NaCl is - 7.90 eV, with a Coulomb contribution of -8.85 eV, a repulsive contribution of 1.02 eV, a van der Waals ...