JEE Main20199 Apr 2019Morning ShiftChemistryChemical Bonding and Molecular StructureActual
Among the following, the molecule expected to be stabilized by anion formation is: C 2 , O 2 , N O , F 2
Options
- AF 2
- BC 2
- CO 2
- DN O
Correct answer
B. C 2
Step-by-step solution
According to molecular orbital theory the configuration is like that C 2 ⇒ σ 1 s 2 < σ * 1 s < σ 2 s < σ * 2 s   π 2 P x 2 = π 2 P y 2 <   σ 2 P z 0   ( B M O ) B O = 8 - 4 2 = 2 C 2 - = σ 1 s 2 < σ * 1 s 2 < σ 2 s 2 < σ * 2 s 2 < π 2 p x 2 = π 2 p y 2 < 2 p z 1 = 9 - 4 2 = 2.5 C 2 → C 2 - bond order increases so it is more favourable. For   F 2 ,   O 2   a n d   N O F