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Solution


Q.

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.                                               [2025]
1 (B), (D) and (E) only  
2 (A), (B), (D) and (E) only  
3 (B), (C) and (D) only  
4 (A), (B) and (D) only  

Ans.

(2)

Fact based