{
  "id": "chemical_element_symbol",
  "name": "Chemical element symbol",
  "status": "draft",
  "doc": "Symbol of a chemical element in the periodic table, one capital letter or a capital and a lowercase letter, as in H or Fe. There are 118 named elements. Many other two-letter strings match the pattern, so use the field name or context.",
  "categories": [
    {
      "id": "chemistry",
      "name": "Chemistry"
    },
    {
      "id": "science",
      "name": "Scientific"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "categorical",
  "regexp": "^[A-Z][a-z]?$",
  "examples": [
    {
      "value": "H",
      "description": "Hydrogen"
    },
    {
      "value": "Fe",
      "description": "Iron"
    },
    {
      "value": "Og",
      "description": "Oganesson, element 118"
    },
    {
      "value": "FE",
      "valid": false,
      "description": "Second letter in upper case"
    }
  ],
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/Chemical_symbol"
    }
  ],
  "translations": {
    "ru": {
      "name": "Символ химического элемента"
    }
  },
  "type": "datatype"
}