Draw an energy diagram for the variation of the potential energy of two hydrogen atoms as a function of the distance that separates their two nuclei. Comment on the energy changes as the two nuclei approach
each other. The bond length of H2 is 74 pm; this distance must be indicated on the energy diagram.
Knowing that the H-H covalent bond energy is 436 kJ/mol, indicate on the graph the minimum energy (in
Joules) for the interaction between the two H atoms. Draw a dotted line for 0 joule energy on the
diagram. Show on the diagram what the H-H bond energy represents.