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Hybrid sp 2 orbital. Intensity is proportional to ∫ |Ψ(r)|2dz.
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Hydrogen wave functions
    Ψ2s ~ (2 - r) e -r/2,     Ψ2px ~ x e -r/2,
are used to get hybrid sp 2 orbitals
    sp 21 = Ψ2s / 31/2 + 2 Ψ2px / 61/2,
    sp 22 = Ψ2s / 31/2 - Ψ2px / 61/2 + Ψ2py / 21/2,
    sp 23 = Ψ2s / 31/2 - Ψ2px / 61/2 - Ψ2py / 21/2.

Valence bond theory     updated 9 Apr 2012