Construct an approximate molecular orbital energy diagram for a hypothetical planar form of NH₃. You may refer to Resource section 4 to determine the form of the appropriate orbitals on the central N atom and on the triangle of H₃ atoms. From a consideration of the atomic energy levels, place the N and H₃ orbitals on either side of a molecular orbital energy-level diagram. Then use your judgement about the effect of bonding and antibonding interactions and energies of the parent orbitals to construct the molecular orbital energy levels in the centre of your diagram and draw lines indicating the contributions of the atomic orbitals to each molecular orbital. Ionization energies are

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I(H1s)=13.6 eV, I(N2s)=26.0 eV, and I(N2p)=13.4eV.