Question

Mark the incorrect statement in the following .
A. The bond order in the species `O_2, O_2^+` and `O_2^-` decreases as `O_2^(+) gt O_2 gt O_2^-`
B. The bond energy in a diatomic molecule always increases when an electron is lost
C. Electrons in antibonding MO contribute to repulsion between two atoms
D. With increase in bond order, bond length decreases and bond strength increases.

Answer 1

Correct Answer - B
When a diatomic molecule lost electron , then its bond order may increase or decrease, so its bond energy may decrease or increase.