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Unformatted text preview: Neither Lewis nor valence bond theory explain paramagnetism of O 2 . O Molecular orbital theory, H 2 Combination of two H 1s orbitals gives two MO orbitals of H 2 . ! 1s is the bonding orbital and ! * 1s is the antibonding orbital. Each time two atomic orbitals combine, we get two MO orbitals: bonding and antibonding Molecular orbitals formed by 2p atomic orbitals. A node containing the bond axis makes a " bond A node perpendicular the bond axis makes and antibonding orbital. Energy level diagram for MOs of second-row homonuclear diatomic molecules MO electron configurations of the second-row diatomic molecules Wrap-up points Hybrid orbitals are formed when s and p orbitals on the same atom mix together. There are two sp, three sp 2 , and four sp 3 hybrid orbitals. Molecular orbitals are formed when orbitals on two different atoms overlap....
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