Question

write short notes on pauli's exclusion prinicple, Hund's rule,Aufbau principle

Answer 1

hund's multiplicity rule- when electrons are filled in degenerate orbitals then after complete unpairing with parallel spin, the pairing will be started.

pauli's exclusion principle: it is  impossible that in any atom, 2 electrons have identical values of 4 quantum no.

Aufbau's rule: acc. to this rule electrons are filed in the increasing order of energy of orbital

Answer 2

Explanation:

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