Hydrogen

{
  "id": "MLC-T-CHM-013162",
  "term": "Hydrogen",
  "field": "Chemistry",
  "definition": "The chemical element with atomic number 1, the lightest and most abundant element in the universe. It typically exists as a diatomic molecule (H2) under standard conditions and is a key component of water and nearly all organic compounds. Its isotopes include protium (1H), deuterium (2H), and tritium (3H).",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "hydron",
    "isotopes",
    "systematic name"
  ],
  "references": [
    "PAC, 1988, 60, 1115. 'Names for hydrogen atoms, ions, and groups, and for reactions involving them (Recommendations 1988)' on page 1116 (https://doi.org/10.1351/pac198860071115)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/hydrogen/"
}