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6.5 - Resonance is One Way to Describe Delocalized Bonding...

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1 Resonance is One Way to Describe Delocalized Bonding Molecular Orbital Theory (MO) is another way to describe Delocalized Bonding H atom H-H molecule Section 6.5 MO Theory The orbitals of a molecule result from the addition or subtraction of valence atomic orbitals Since e-s travel in waves, the addition or subtraction of atomic orbitals can be constructive or destructive + + Section 6.5 Molecular Orbital Theory (MO) + Red : represents the wave function when algebraic sign is positive - Blue : represents the wave function when algebraic sign is negative nucleus atomic orbital AO molecular orbital MO Section 6.5 MO Theory – Bonding MO’s + = bond Bonding MO s orbitals p orbitals + = bond Bonding MO Section 6.5 p orbitals + = bond Bonding MO constructive MO Theory – Antibonding MO’s Section 6.5 + = bond Anti-bonding MO s orbitals Nodal plane region of no e- density + = p orbitals bond Anti-bonding MO + = p orbitals bond Anti-Bonding MO destructive AO 1 s E orbital Bonding MO Antibonding MO orbital Nodal plane region of no e- density # MO = # AO Bonding in H 2 AO 1 s + + Section 6.5
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