JEE Main 2025 — Structure of Atom Question with Solution
JEE Main 2025 (7 Apr Shift 2)
Question
The extra stability of half-filled subshell is due to
(A) Symmetrical distribution of electrons
(B) Smaller coulombic repulsion energy
(C) The presence of electrons with the same spin in non-degenerate orbitals
(D) Larger exchange energy
(E) Relatively smaller shielding of electrons by one another
Identify the correct statements
(A) Symmetrical distribution of electrons
(B) Smaller coulombic repulsion energy
(C) The presence of electrons with the same spin in non-degenerate orbitals
(D) Larger exchange energy
(E) Relatively smaller shielding of electrons by one another
Identify the correct statements
Choose an option
Show full solutionCorrect option: B
Correct answer
B and (E) only
Step-by-step explanation
Extra stability of half filled is due to :
(i) Symmetrical distribution of electrons
(ii) Large exchange energy
(iii) Smaller coulombic repulsion
(iv) Smaller shielding of electrons by one another
(i) Symmetrical distribution of electrons
(ii) Large exchange energy
(iii) Smaller coulombic repulsion
(iv) Smaller shielding of electrons by one another
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Structure of Atom chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2025, covering the Structure of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.