Molecular orbital theory 2

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http://www.chem.ucla.edu/~cantrill/30A_F05/Diborane.pdf

in hetero diatomic molecules there is no longer an energy match between the atomic orbitals.

electronegativity

The power of an atom ( in a compound) to attract electrons.

dipole moment

The physical result of unequal sharing of an electron pair.

LUMO

lowest unoccupied molecular orbital

HOMO

highest occupied molecular orbital

isoelectronic species

Two species are isoelectronic if they possess the same total number of electrons.

isostructural species

Two species are isostructural if they have the same structures