1. the orbitals are filled with electrons in order of increasing energy
2. the orbitals are filled with electrons in order of increasing angular momentum
Other related questions:
Q: How does Hund’s rule apply to electron configuration?
A: Hund’s rule states that, in a given subshell, electrons will occupy each orbital singly before they begin to pair up.
Q: What are the three rules in determining the lowest energy arrangement of the electron?
A: 1. Electrons will fill orbitals in order of increasing energy.
2. Electrons will fill orbitals with the lowest energy first.
3. Electrons will fill orbitals in order of increasing orbital size.
Q: When orbitals are equal in energy one electron is added?
A: If orbitals are equal in energy, one electron is added to each orbital until each orbital has two electrons.
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