Question

What is hunds rule ??????

Answer 1

Hund's Rule. Hund's rule: every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.

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Answer 2

electron pairing on P, D,F orbital cannot occur until each orbital of a given subshell contains one electron each or is singly occupied .....