The extra stability of half-filled subshell is due to\ (A) Symmetrical distribution of electrons\

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.\

Professor PC Thomas Classes · Answer

(d): The extra stability of halffilled subshell is due to :\ i) relatively small shielding of electrons by one another.\ ii) smaller coulombic repulsion energy\ iii) larger exchange energy\ iv) symmetrical distribution of electrons\ So, statements A, B, D and E are correct.