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What is Hund's rule?
- A Electrons will always occupy the lowest energy level available.
- B Electrons will pair up in the same orbital only when all orbitals have at least one electron.
- C Electrons will fill orbitals of the same energy level one at a time with parallel spins before pairing up.
- D Electrons will populate higher energy orbitals before filling lower energy orbitals.
That's Correct!
It's Wrong!
Hund's rule states that electrons will fill orbitals of the same energy level one at a time with parallel spins before pairing up. This rule ensures the maximum spin alignment and therefore the maximum stability for the atom or ion.
