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← ScienceWhich outcome occurs when anti-bonding orbitals become more populated in diatomic oxygen?
A)Increased paramagnetic susceptibility appears
B)Decreased bond dissociation energy✓
C)Increased vibrational frequency appears
D)Reduced interatomic distance forms
💡 Explanation
Population of anti-bonding orbitals weakens the bond because electron density shifts away from the nuclei, reducing the strength of covalent bonding. Therefore, bond dissociation energies decrease rather than increasing, promoting easier molecular fragmentation at lower energies.
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