JEE Mains Chemistry Past PapershardMCQ SINGLE

The extra stability of half–filled subshell is due to : (A) Symmetrical distribution of electrons (BJEE Mains Chemistry Past Papers Chemistry Question

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

Answer: C

💡 Solution & 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.

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