Define the term ‘point defects’? Mention the main difference between stoichiometric and non-stoichiometric point defects.
Point defect - As the name implies, point faults occur exclusively at or around a single lattice point. They are not spatially expanded in any way. Stoichiometric defects do not affect the stoichiometric composition of a compound whereas the non-stoichiometric defect affects the stoichiometric composition of a compound.
