Which of the following correctly summarizes the Aufbau Principle? Each electron within an atom will have its own unique set of

Question

Which of the following correctly summarizes the Aufbau Principle?
Each electron within an atom will have its own unique set of four quantum numbers.
Matter can neither be created nor destroyed. It only changes form during chemical reactions.
It is fundamentally impossible to know both the location and velocity of an electron at the same time.
The ground state or lowest energy state of an atom is the one that contains the maximum number of unpaired electrons.
Electrons orbiting an atom fill the lowest available energy levels prior to filling higher energy orbitals.

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