AIIMS2005ChemistryChemical Bonding and Molecular Structure
Assertion : B ₂ molecule is diamagnetic. Reason : The highest occupied molecular orbital is of type.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
D. If both assertion and reason are false.
Step-by-step solution
In B ₂ , total number of electrons =10 B ₂ (1 s)^2 ^* (1 s^2 ) (2 s)^2 ^*(2 s)^2 (2 p_x )^1 (2 p_y )^1 Presence of unpaired electron shows the paramagnetic nature. The highest occupied molecular orbital is of -type.