The last lecture’s coverage:Molecular geometry by VSEPR (10.1)Dipole moments of simple and complex molecules (10.2)
Objectives for today:Valence Bond Theory and Hybridization(10.3, 10.4, 10.5)Experimental demonstration of the paramagnetic property of liquid oxygen. Molecular Orbital Theory and Delocalization (10.6, 10.7, 10.8)
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Bond Dissociation EnergyBond LengthH2F2436.4 kJ/mole150.6 kJ/mole74 pm142 pmValence Bond Theory –bonds are formed by sharing of e-from overlapping atomicorbitals.Overlap Of2 1s2 2pHow does Lewis theory explain the bonds in H2and F2?Sharing of two electrons between the two atoms.10.3Molecular Orbital Theory –formation of molecular orbitals from atomicorbitals.