Question

Consider bonding in I₃-

a) Adopting D_2h point group, find the symmetry of the valence orbitals of I

b) Find the group orbitals of the terminal iodine atoms

c) For each group orbital verify its symmetry using the character table of D_2h

d) Prepare a molecular orbital diagram of I₃- showing

- MO shapes

- MO symmetry

- Bonding character

- Label the HOMO and LUMO

I: 5S (-20.9 eV) , 5p (-11.2 eV)

Answer 1