Excitation energy

{
  "id": "MLC-T-CHM-004181",
  "term": "Excitation energy",
  "field": "Chemistry",
  "definition": "The minimum amount of energy required to promote an atom, molecule, or ion from its ground electronic state to a higher, excited electronic state. This energy corresponds to the difference in energy between the two states. It is a quantized value, meaning only specific amounts of energy can be absorbed to cause an excitation.",
  "synonyms": [
    "initial energy",
    "acceleration energy"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "kinetic energy"
  ],
  "references": [
    "Orange Book, 2nd ed., p. 223 (https://media.iupac.org/publications/analytical_compendium/)",
    "PAC, 1983, 55, 2023. 'Nomenclature, symbols and units recommended for in situ microanalysis (Provisional)' on page 2027 (https://doi.org/10.1351/pac198355122023)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/excitation-energy/"
}