Question

explain pauli exclusion principal with example?

Answer 1

principle : An orbital can accommodate two electrons only. and these two electrons must have opposite spins for example : let us consider a element I.e, Be (Z=4) electronic configuration is 1s2 2s2

Answer 2

Pauli Exclusion Principle.

The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers.

As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.