JEE Advanced2025ChemistryChemical Bonding and Molecular StructureActual
Regarding the molecular orbital (MO) energy levels for homonuclear diatomic molecules, the INCORRECT statement(s) is(are)
Options
- ABond order of Ne ₂ is zero.
- BThe highest occupied molecular orbital (HOMO) of F₂ is -type.
- CBond energy of O ₂⁺ is smaller than the bond energy of O ₂ .
- DBond length of Li ₂ is larger than the bond length of B ₂
Correct answer
B. The highest occupied molecular orbital (HOMO) of F₂ is -type.
Step-by-step solution
(i) Ne ₂ ( 1 ~s ^2 ) ( ^* 1 ~s ^2 ) ( 2 ~s ^2 ) ( ^* 2 ~s ^2 ) ( 2 p _ z ^2 ) ( 2 p _ x ^2= 2 p _ y ^2 ) ( ^* 2 p _ x ^2= ^* 2 p _ y ^2 ) ( ^* 2 p _ z ^2 ) B.O. = 6-6 2 =0 (ii) F ₂ ( 1 ~s ^2 ) ( ^* 1 ~s ^2 ) ( 2 ~s ^2 ) ( ^* 2 ~s ^2 ) ( 2 p _ z ^2 ) ( 2 p _ x ^2= 2 p _ y ^2 ) ( ^* 2 p _ x ^2= ^* 2 p _ y ^2 ) (iii) O ₂^ ( 1 s^2 ) ( ^* 1 s^2 ) ( 2 s^2 ) ( ^* 2 s^2 ) ( 2 p_z^2 ) ( 2 p_x^2= 2 p_y^2 ) ( ^* 2 p_x^1= ^* 2 p_y ) B.O. = 6-1 2 =2.5 O ₂ ( 1 s^2 ) ( ^* 1 s^2 ) ( 2 s^2 ) ( ^* 2 s^2 ) ( 2 p_ z ^2 ) ( 2 p_ x ^2=