Odd-electron ion

{
  "id": "MLC-T-CHM-008193",
  "term": "Odd-electron ion",
  "field": "Chemistry",
  "definition": "An ion containing an unpaired electron in its ground electronic state or in one of its excited states. This results in the ion having a net electronic spin and being paramagnetic. An odd-electron ion is also known as a radical ion, and its formation is a common outcome of electron ionization in mass spectrometry, where a neutral molecule loses a single electron.",
  "subject": "Physical and Biophysical Chemistry",
  "see_also": [
    "radical ion"
  ],
  "references": [
    "PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1549 (https://doi.org/10.1351/pac199163101541)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/odd-electron-ion/"
}