Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Orbital levels refer to regions around an atom's nucleus where electrons are most likely found. They're often referred to as "energy levels" because each level corresponds with specific amounts of energy.
This describes how electrons are distributed among various atomic orbitals in an atom, similar to how tenants might be distributed across different floors in our apartment building analogy.
Quantum Numbers: These numbers describe properties of atomic orbitals and their electron occupants, much like tenant records might detail who lives where in our apartment building.
These are electrons that occupy the outermost shell or highest energy level of an atom โ they're like the tenants who live on the top floor of our apartment building.