| 1.2 A Brief Review of Bonding in Materials
 
 Bonding in materials is a very important criterion and  determines many of the physical properties of the materials. For basics of  bonding, you can refer to any elementary materials science book (see  bibliography) to get familiar with the fundamental aspects of bonding between  atoms i.e. how to determine the equilibrium  distance, bond energy  and fundamental properties like young’s modulus.Bonding in materials can be divided in two categories:
 
                     
                      
                        Primary bonding Secondary bonding |