Question

state hund's rule of maximum multiplicity.

Answer 1

according to hunds rule,in an orbital electrons are filled singly of the same spin and then electrons are added doubly .

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Answer 2

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★ Hund's rule of maximum multiplicity

☘ The rules deals with the filling of electrons into the orbitals belonging to the same subshell (that is, orbitals of equal energy called degenerate orbitals)

☘ It states that : "Pairing of electrons in orbitals belonging to the same subshell (p,d,f) does not take place until each orbital belonging to that subshell has got one electron each i.e., it is singly occupied".

☘ Since there are three p,five d and 7 f orbitals, therefore, the pairing of electrons will start in the p,d and f orbitals with the entry of 4th 6th and 8th electron, respectively.