Noble gases

{
  "id": "MLC-T-MET-007557",
  "term": "Noble gases",
  "field": "Meteorology and atmospheric science",
  "definition": "A group of chemical elements in Group 18 of the periodic table, characterized by their extreme chemical inertness due to a full outer electron shell. These gases include helium, neon, argon, krypton, xenon, and radon, and are present in the Earth's atmosphere in trace amounts. Argon is the most abundant noble gas in the atmosphere, making up about 0.93% of its volume.",
  "synonyms": [
    "inert gases",
    "rare gases"
  ],
  "url": "https://mlchart.com/terminology/meteorology/noble-gases/"
}