Collect information about various rules which are to be followed, while filling the electrons in various shells of an atom.
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Aufbau principle- build from the bottom up, and fill lowest energy levels first
Pauli exclusion principle- each orbital may have only two electrons, with opposite spins
Hund's rule- each orbital of a level must each have one electron before any have two
Pauli exclusion principle- each orbital may have only two electrons, with opposite spins
Hund's rule- each orbital of a level must each have one electron before any have two
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