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Which effect increases when molecular orbital overlap declines?

A)Förster resonance energy transfer weakens
B)Singlet fission efficiency increases sharply
C)Internal conversion rate gets larger
D)Intersystem crossing is slightly increased

💡 Explanation

Reduced overlap decreases electronic coupling vital for electronic energy transfer via Förster resonance, because the dipole-dipole interaction weakens, therefore the transfer diminishes rather than the energy being more rapidly converted through other mechanisms.

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