A single element by symbol, number or name

Code snippets

curl "https://api.oanor.com/elements-api/v1/element" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/elements-api/v1/element", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/elements-api/v1/element");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/elements-api/v1/element",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "_hay": "gold au transition metal",
        "boil": 3243,
        "melt": 1337.33,
        "name": "Gold",
        "block": "d",
        "group": 11,
        "phase": "Solid",
        "number": 79,
        "period": 6,
        "shells": [
            2,
            8,
            18,
            32,
            18,
            1
        ],
        "source": "https://en.wikipedia.org/wiki/Gold",
        "symbol": "Au",
        "cpk_hex": "ffd123",
        "density": 19.3,
        "summary": "Gold is a chemical element with symbol Au (from Latin:aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable and ductile metal. Chemically, gold is a transition metal and a group 11 element.",
        "category": "transition metal",
        "named_by": null,
        "appearance": "metallic yellow",
        "molar_heat": 25.418,
        "atomic_mass": 196.9665695,
        "discovered_by": "Middle East",
        "electron_affinity": 222.747,
        "ionization_energies": [
            890.1,
            1980
        ],
        "electron_configuration": "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s1 4f14 5d10",
        "electronegativity_pauling": 2.54,
        "electron_configuration_semantic": "[Xe] 4f14 5d10 6s1"
    },
    "meta": {
        "timestamp": "2026-05-31T01:12:18.057Z",
        "request_id": "f5ea8f70-d6da-4e0a-a8b8-b81929b415d8"
    },
    "status": "ok",
    "message": "Element retrieved",
    "success": true
}