Linked from
The 69 pages that link to Atomic orbital, each with the reason it gives.
Covalent bondBroader topic: Atomic orbitals overlap to form many covalent bonds.
ElectronBroader topic: Orbitals describe electron states without treating them as planetary paths.
Hydrogen atomBroader topic: Hydrogen’s electron occupies orbitals such as the 1s ground state.
Electron shellBroader topic: A shell groups orbitals with the same principal quantum number.
WavefunctionBroader topic: Orbital shapes visualize spatial features of atomic wavefunctions.
Atomic physicsBroader topic: Orbitals specify the allowed electron states within atomic structure.