Doublet state

{
  "id": "MLC-T-CHM-003421",
  "term": "Doublet state",
  "field": "Chemistry",
  "definition": "An electronic state of an atom or molecule characterized by a total spin angular momentum quantum number of 1/2. This corresponds to a system with one unpaired electron. The multiplicity of a doublet state is 2, calculated as 2S+1 where S is the total spin.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "multiplicity"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2237 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/doublet-state/"
}