Question

state Pauli's exclusion principal and its significance.

Answer 1

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.

Answer 2

Answer:

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.

Explanation:

★ pauli's exclusion principle

☘ The number of electrons to be filled in various orbitals is restricted by the exclusion principle ,given by the Austrian scientist Wolfgang Pauli .

☘ According to this principle ; No two electrons in an atom can have the same set of four Quantum numbers .

☘ Pauli exclusion principle can also be stated as ; Only two electrons exist in the same orbital and these electrons must have opposite spin .

☘ This means that the two electrons can have the same value of three quantum numbers n, l and m1 but must have the opposite spin quantum number .