Periodic Table 2026

Everything the Interactive Periodic Table knows about one element: classification, physical and chemical properties with units, electron configuration, discovery, a short summary and a longer introduction (uses, production, history, safety), plus the link to its page.

{
  "type": "object",
  "properties": {
    "element": {
      "type": "string",
      "minLength": 1,
      "description": "Symbol (Fe), atomic number (26) or name in any supported language (iron, Eisen, 铁)"
    },
    "locale": {
      "description": "Language for names and text: en, es, fr, de, zh, pt, ja, hi, ru (default en)",
      "type": "string",
      "enum": [
        "en",
        "es",
        "fr",
        "de",
        "zh",
        "pt",
        "ja",
        "hi",
        "ru"
      ]
    }
  },
  "required": [
    "element"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Find elements by symbol, atomic number, or full or partial name in any supported language. Use it when a name is misspelled, partial or in another language.

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "minLength": 1,
      "description": "What to look for, e.g. \"Fe\", \"26\", \"carb\", \"Sauerstoff\", \"金\""
    },
    "locale": {
      "description": "Language for names and text: en, es, fr, de, zh, pt, ja, hi, ru (default en)",
      "type": "string",
      "enum": [
        "en",
        "es",
        "fr",
        "de",
        "zh",
        "pt",
        "ja",
        "hi",
        "ru"
      ]
    },
    "limit": {
      "description": "Maximum results (default 10)",
      "type": "integer",
      "minimum": 1,
      "maximum": 118
    }
  },
  "required": [
    "query"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

List elements, optionally filtered by category, block, period, group, state at 25 °C or a numeric property range, and sorted by a property. Without filters it lists all 118 elements in atomic-number order. Elements with no value for the range or sort property are left out.

{
  "type": "object",
  "properties": {
    "category": {
      "description": "Category",
      "type": "string",
      "enum": [
        "alkali-metal",
        "alkaline-earth-metal",
        "transition-metal",
        "post-transition-metal",
        "metalloid",
        "nonmetal",
        "noble-gas",
        "lanthanide",
        "actinide",
        "unknown"
      ]
    },
    "block": {
      "description": "Block",
      "type": "string",
      "enum": [
        "s",
        "p",
        "d",
        "f"
      ]
    },
    "period": {
      "description": "Period (row), 1-7",
      "type": "integer",
      "minimum": 1,
      "maximum": 7
    },
    "group": {
      "description": "Group (column), 1-18; lanthanides and actinides have none",
      "type": "integer",
      "minimum": 1,
      "maximum": 18
    },
    "phase": {
      "description": "State at 25 °C, derived from the melting and boiling points",
      "type": "string",
      "enum": [
        "solid",
        "liquid",
        "gas"
      ]
    },
    "property": {
      "description": "Numeric property for min/max and sorting",
      "type": "string",
      "enum": [
        "atomicNumber",
        "atomicMass",
        "density",
        "meltingPoint",
        "boilingPoint",
        "electronegativity",
        "ionizationEnergy",
        "electronAffinity",
        "atomicRadius",
        "covalentRadius",
        "specificHeat",
        "thermalConductivity",
        "discoveryYear"
      ]
    },
    "min": {
      "description": "Minimum value of `property` (inclusive), in its unit",
      "type": "number"
    },
    "max": {
      "description": "Maximum value of `property` (inclusive), in its unit",
      "type": "number"
    },
    "sort": {
      "description": "Sort by `property` (default: atomic number)",
      "type": "string",
      "enum": [
        "asc",
        "desc"
      ]
    },
    "locale": {
      "description": "Language for names and text: en, es, fr, de, zh, pt, ja, hi, ru (default en)",
      "type": "string",
      "enum": [
        "en",
        "es",
        "fr",
        "de",
        "zh",
        "pt",
        "ja",
        "hi",
        "ru"
      ]
    },
    "limit": {
      "description": "Maximum results (default 118)",
      "type": "integer",
      "minimum": 1,
      "maximum": 118
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Side-by-side numeric properties of 2-10 elements, with units.

{
  "type": "object",
  "properties": {
    "elements": {
      "minItems": 2,
      "maxItems": 10,
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1,
        "description": "Symbol (Fe), atomic number (26) or name in any supported language (iron, Eisen, 铁)"
      },
      "description": "The elements to compare"
    },
    "properties": {
      "description": "Properties to include (default: all numeric properties)",
      "minItems": 1,
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "atomicNumber",
          "atomicMass",
          "density",
          "meltingPoint",
          "boilingPoint",
          "electronegativity",
          "ionizationEnergy",
          "electronAffinity",
          "atomicRadius",
          "covalentRadius",
          "specificHeat",
          "thermalConductivity",
          "discoveryYear"
        ]
      }
    },
    "locale": {
      "description": "Language for names and text: en, es, fr, de, zh, pt, ja, hi, ru (default en)",
      "type": "string",
      "enum": [
        "en",
        "es",
        "fr",
        "de",
        "zh",
        "pt",
        "ja",
        "hi",
        "ru"
      ]
    }
  },
  "required": [
    "elements"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}