Notes 101309 - Trigonal Planar Electron Geometries require...

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Notes 10/13/09 -Memorize Energy-Level diagram for B2, C2, N2, O2, F2, Ne2 2p - - - -----> (hybridization) 2p - 2p - 2s - 2s - 2s - When Do We Use Hybrids Diatomic molecules involving at least one light atom, Be, B, C, N will have s-p mixing or s-p hybrid orbitals Geometries with angles other than 90 and 180 sp2 hybrids orbitals are needed for bond angles of 120 degrees sp3 hybrid orbitals for bond angles of 109.5 degrees sp3d hybrid orbitals for trigonal bipyramids sp3d2 hybrid orbitals for octahedral geometries
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Unformatted text preview: Trigonal Planar Electron Geometries require 3 electron clouds sp2 orbitals C2H4 Sp2 arrangements Absorption Spectra: HOMO – LUMO HOMO and LUMO are acronyms for highest occupied molecular orbital and lowest unoccupied molecular orbital, respectively. The difference of the energies of the HOMO and LUMO, termed the band gap, can sometimes serve as a measure of the excitability of the molecule: the smaller the energy, the more easily it will be excited....
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