NTA Abhyas NEET2020ChemistryChemical Bonding and Molecular StructurePractice
Which one of the following species does not exist under normal conditions?
Options
- AL i 2
- BB e 2 +
- CB e 2
- DB 2
Correct answer
C. B e 2
Step-by-step solution
B e 2 → σ 1 s 2 < σ * 1 s 2 < σ 2 s 2 < σ * 2 s 2 Bond order = 4 - 4 2 = 0 B e 2 does not exist as for it bond order is zero.