Rydberg state

{
  "id": "MLC-T-CHM-010464",
  "term": "Rydberg state",
  "field": "Chemistry",
  "definition": "An electronically excited state of an atom or molecule in which an electron is promoted to an orbital with a very large principal quantum number. These orbitals resemble those of a hydrogen atom, with the excited electron far from the core. Rydberg states exhibit properties similar to those of highly excited hydrogen atoms, including large orbital radii and small ionization energies.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "Rydberg orbital",
    "electronic state",
    "valence"
  ],
  "references": [
    "PAC, 1999, 71, 1919. 'Glossary of terms used in theoretical organic chemistry' on page 1961 (https://doi.org/10.1351/pac199971101919)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/rydberg-state/"
}