1. The irreducible representation for the s bonding is (A1 + T2) (PLEASE PROVE BY YOURSELF){COMPULSORY}, which corresponds to the s orbital and the (px, py, pz) set that we would use in VBT to construct a the sp3 hybrid orbitals suitable for a tetrahedral arrangement of atoms.

2. The irreducible representation for the p bonding is (E + T1 + T2), (PLEASE PROVE BY YOURSELF){COMPULSORY}, which corresponds to the dx2-y2 and dz2 pair for E and either the (px, py, pz) set or the (dxy, dxz, dyz) set for T2, since T1 does not correspond to any of the orbitals that might be involved in bonding. Because the (px, py, pz) set has already been used in the s bonding, only the (dxy, dxz, dyz) set may be used for p bonding.