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Which outcome results when a photon interacts with an antibonding molecular orbital in a dye molecule?

A)Destructive interference lowers emission yield
B)Molecular vibration increases quantum efficiency
C)Charge transfer stabilizes excited state
D)Intersystem crossing yields phosphorescence

💡 Explanation

When a photon populates an antibonding orbital, destructive interference weakens the overall molecular bonding, decreasing stability and reducing the likelihood of radiative decay, creating lower florescence. Therefore emission yield decreases, rather than vibration, transfer, or phosphorescence which involve alternative excitation/decay pathways.

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