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← ScienceWhich mechanism limits electron delocalization across peptide bonds?
A)Steric hindrance alters orbital alignment✓
B)Resonance stiffens polypeptide chain twisting
C)Inductive effects intensify bond polarity
D)Hyperconjugation stabilizes positive charge buildup
💡 Explanation
Steric hindrance affects orbital alignment in peptide bonds, preventing full electron delocalization because bulky side chains introduce rotational strain. This is favored rather than increased resonance or polarity, which require specific charged moieties.
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