What is Pauli’s exclusion principle of electron configuration?
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Pauli’s exclusion principle
The four quantum numbers of two electrons in same atom can never be same. If 3 quantum numbers of two electrons are same then the fourth quantum number must be different.
That means for 2 electrons of same atom the size (n), shape (1) and angular position (m) of orbital can be same if the directions of their rotation in their own axes are opposite to each other. So the main idea of Pauli’s exclusion principle is “There may be highest two electrons in an atomic orbital if their rotation or spins are in opposite directions.”