answer in detail

Q. 2 (a) The bonds in diamond are predominantly covalent in character and so are the bonds along the chains of a long chain polymer. Why does the polymer melt at a much lower temperature? (b) What type(s) of bonding would be expected for each of the following materials: Calcium fluoride (CaF2), Bronze, Cadmium telluride (CdTe). Rubber, and Tungsten? (c) Plot a graph of potential energy versus interatomic separation for two atoms/ions, showing the curves for attractive ( (EA), repulsive ( EK), and net (EN) energies