Q. The ionisation energy of nitrogen is larger than that of oxygen because of
A) Of greater attraction of electrons by the nucleus
B) Of the size of nitrogen atom being smaller
C) The half-filled $p$-orbitals possess extra stability
D) Of greater penetration effect
Explanation
The correct answer is Option C: The half-filled $p$-orbitals possess extra stability.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.