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

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

If both assertion and reason are true but reason is not the correct explanation of the assertion

If assertion is true but reason is false.

If the assertion and reason both are false

If both assertion and reason are true and the reason is the correct explanation of the assertion.

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

MO electronic configuration of $F_{2}$
molecule is

$\begin{aligned} F_{2} = σ 1 s^{2}, σ^{*} 1 s^{2}, σ 2 s^{2}, σ^{*} 2 s^{2}, σ 2 p_{x}^{2}, \\ π 2 p_{y}^{2} \approx π 2 p_{z}^{2}, π^{*} 2 p_{y}^{2} \approx 2 p_{z}^{2} \end{aligned}$

Bond order $= \frac{N_{b} - N_{a}}{2}$

Where, $N_{b} =$ Number of electrons in bonding molecular orbitals

$N_{a} =$ Number of electrons in antibonding molecular orbitals $= \frac{8 - 6}{2} = 1$

Watch 3-min video & get full concept clarity

hear from our champions

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!