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Which outcome occurs when a core electron occupies an antibonding molecular orbital?

A)Decreased bond strength and instability
B)Increased ionization energy
C)Enhanced molecular conductivity
D)Stabilization against thermal dissociation

💡 Explanation

Entering an antibonding orbital increases energy due to destructive interference. Because this raises the overall energy state and the antibonding orbital weakens the molecule's bonding, therefore bond strength decreases, rather than alternative outcomes like stability.

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