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← ScienceWhich outcome occurs when sigma (*) antibonding orbitals dominate?
A)Paramagnetism significantly decreases overall substance
B)Bond length increases between atoms✓
C)Increased quantum tunnelling probability occurs
D)Resonance stabilisation becomes energetically favoured
💡 Explanation
Antibonding orbitals are higher energy than bonding orbitals; therefore, population of sigma (*) orbitals causes increased bond length due to repulsive electronic interactions, rather than paramagnetism because paired electrons dominate, or tunnelling because nuclear properties matter more.
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