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JEE Main20257 Apr 2025Evening ShiftChemistryStructure of AtomActual

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

Options

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

Correct answer

B. ( A ),( B ),( D ) and (E) only

Step-by-step solution

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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