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Which principle explains the filling order of atomic orbitals?
- A Hund's rule
- B Pauli exclusion principle
- C Aufbau principle
- D Octet rule
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The filling order of atomic orbitals is explained by the Aufbau principle. According to this principle, electrons fill the lowest energy levels first before moving to higher energy levels. This principle helps in determining the electron configuration of atoms and their stability.
