Excitation level

{
  "id": "MLC-T-CHM-004182",
  "term": "Excitation level",
  "field": "Chemistry",
  "definition": "A specific quantized energy state of an atom, molecule, or ion that is higher in energy than its ground state. When a species absorbs energy, it can transition to one of these discrete excitation levels. The energy difference between the ground state and an excitation level corresponds to the excitation energy.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "X-ray level",
    "exciton",
    "ionization"
  ],
  "references": [
    "PAC, 1991, 63, 735. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - VIII. Nomenclature system for X-ray spectroscopy (Recommendations 1991)' on page 738 (https://doi.org/10.1351/pac199163050735)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/excitation-level/"
}