The electro valent configuration of Pauli exclclusion

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principle states that in an atom or molecule, no two electrons can have the same set of four quantum numbers: the principal quantum number (n), the azimuthal quantum number (l), the magnetic quantum number (ml), and the spin quantum number (ms). This means that each electron in an atom or molecule must occupy a unique orbital, and no two electrons can have the same spin. This principle is essential for understanding the structure and behavior of atoms and molecules, and is a key principle in determining the electronic configuration of a species.