Periodic table lookup by symbol, name or atomic number: weight, configuration, e...
https://chemistry-calc.x402tookit.com/element-lookupOverview
Periodic table lookup by symbol, name or atomic number: weight, configuration, electronegativity, melting and boiling points.
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x402
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uncategorized
Provider
Chemistry Calculators
Source
bazaar
Indexed
2026-10-20 21:22:34
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Latency (p50)
529ms
Uptime (30d)
86.7%
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83.3/100
Last Checked
2026-10-28 06:42:35
Last Healthy
2026-10-28 06:42:35
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Input Schema
{
"method": "GET",
"queryParams": {
"element": "Fe"
},
"type": "http"
}
Output Schema
{
"example": {
"asOf": "2026-10-11T08:45:38.680Z",
"atomicNumber": 26,
"atomicWeight": 55.845,
"atomicWeightBasis": "IUPAC standard atomic weight",
"block": "Transition metal",
"boilingPointC": 2860.85,
"boilingPointK": 3134,
"commonOxidationStates": "+3, +2",
"degraded": false,
"densityGPerCm3": 7.874,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"discovered": "Ancient",
"electronConfiguration": "[Ar]4s2 3d6",
"electronegativityPauling": 1.83,
"meltingPointC": 1537.85,
"meltingPointK": 1811,
"name": "Iron",
"notChecked": [
"isotopes and their abundances",
"temperature or pressure dependence of properties",
"…1 more"
],
"period": 4,
"reasons": [
"IUPAC standard atomic weight",
"Data: PubChem Periodic Table and NIST Atomic Weights and Isotopic Compositions, retrieved 2026-10-11."
],
"source": "computed locally",
"standardState": "Solid",
"summary": "Iron (Fe), Z = 26: atomic weight 55.845, Transition metal, period 4, electronegativity 1.83.",
"symbol": "Fe",
"verdict": "FOUND"
},
"type": "json"
}