Q3 a) What are the conditions favourable for covalent bonding? b) Write the wave function for a two-electron system such as Hz.
c) The bond distance in Nz is 109pm and in N," is 112pm. Draw molecular-orbital energy-level
diagrams for this two species and explain why the difference in the bond distances.
d) What is the difference in the covalent bond present in the following compounds;
HCI, H, O and H.
e) Using the molecular orbital energy diagram, show why He does not exist but Hey" is known.