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JEE MAIN 2025
07.04.25 S2
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 Indentify the correct statements :
Select the correct option:
A
(B), (D) and (E) only
B
(A), (B), (D) and (E) only
C
(B), (C) and (D) only
D
(A), (B) and (D) only
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Sol. 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
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