Question

Assertion :Fluorine molecule has bond order one. Reason: The number of electrons in antibonding molecular orbitals is two less than in bonding molecule orbitals.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Option (A) is correct.Explanation is correct reason for statement.
Bonded pairs of electrons(BP): $1s^{2}2s^{2}2p_y^{2}2p_z^{2}2p_x^2$ Total $10$ electrons.
Anti bond pairs of electrons(ABP): $1s{\ast }^{2}2s{\ast }^{2}2p_y{\ast }^{2}2p_z{\ast }^{2}2p_x{\ast }^2$ Total $8$ electrons.
Bond Order (B.O.) = BP-ABP/2 = 10-8/2 = 1