Wave Phenomena and Interference

To Obtain the disturbance at any point we have to add together contributions from all the waves generated by the rain drops that is, we have to use superposition of the individual waves. 

The idea of the superposition of waves is useful to bear in mind when we deal with chemical bonding the individual waves are akin to the AOs and their superposition gives the MOs of sets of atoms. We should expect regions where the AOs are in phase to result in a relatively large wavefunction amplitude, while regions where opposite phases come together will give a low, or even zero, amplitude. 

Destructive superposition of out-of-phase AOs. Note zero orbital on, central C atom, 

Problem 7.1 In this problem we will look at the symmetry of the MO shown in 

Compare your characters with the standard table in Appendix 12 and, hence, assign an irreducible representation to the MO. 

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