Question

what do u mean by hund's rule ?? no spamming please​

Answer 1

Answer:

here is ur answer...

According to this rule electron pairing in orbitals starts only when all available empty orbitals of the same energy ( degenerate orbitals ) are singly occupied...

hope it helps u

Answer 2

HUNDS RULE

Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells