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The solution: Valence bond theory AtilVSEPRith tht•A way to reconcile VSEPR with the quantum mechanical model for atomic orbitals•Appropriate s, p, and d orbitals on central atom are mixed to create a new set of hybrid orbitals directed towards bonded atoms and lone pairs•Consider the bonding and geometry present in CH4to illustrate thisS. Ensign, Chem. 121081
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109.5°Bonding of C to H in methane, CH4C: Group 4A, 1s22s22p2, 4 bonds needed to satisfy octet 1s2s2pIndividual valence atomic orbitals of C in the ground state: zzzzxyxyxyxyzpypzpxsAll four valence valence atomic orbitals shown together: xyS. Ensign, Chem. 121082