JEE Main 2024 — Chemical Bonding And Molecular Structure Question with Solution

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : $${\mathrm{NH}}_3$$ and $${\mathrm{NF}}_3$$ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of $${\mathrm{NH}}_3$$ is greater than that of $${\mathrm{NF}}_3$$.

Reason (R) : In $${\mathrm{NH}}_3$$, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the $$\mathrm{N}-\mathrm{H}$$ bonds. $$\mathrm{F}$$ is the most electronegative element.

In the light of the above statements, choose the correct answer from the options given below :