I' Diatomic Molecules

1
I. Diatomic Molecules
(5) Ionic diatomic molecules LiH, HCl, NaCl
MO
H
Cl
1s
3p
1?
5?
3s
Ne
Hybrid orbital 2s2p Negative charge Proton
side!
2
I. Diatomic Molecules
(6). The elementary angular momenta of a diatomic
molecule
Elementary angular momenta
Let us neglect spin interaction first The total
orbital angular momentum
Thus,
are good quantum number for diatomic molecules
Symmetrical top
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I. Diatomic Molecules
The total wave function
Consequence Total rotational energy shift a
constant for a given electronic configuration.
K may not start from zero!
The total energy