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Chemistry Calculators – Element Lookup
x402
Chemistry Calculators – Element Lookup is a paid API for AI agents from chemistry-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Looks up periodic table data for any element by symbol, name, or atomic number, returning weight, electron configuration, electronegativity, melting/boiling points, density, and more.
Price / call$0.02
Success—
StatusUnknown
How this service works
Periodic table lookup by symbol, name or atomic number: weight, configuration, electronegativity, melting and boiling points.
Output
Returns a JSON object containing the element's name, symbol, atomic number, atomic weight (and its basis), electron configuration, Pauling electronegativity, melting and boiling points in both Celsius and Kelvin, density in g/cm³, standard state, common oxidation states, period, block, discovery year, and a summary description. May include source attribution and degraded/disclaimer flags.
Example use cases
Student homework element lookup
“I need the full periodic table data for gold — atomic number, weight, electron configuration, Pauling electronegativity, melting and boiling points, and what block and period it's in.”
Electronegativity for bond type calculation
“What's the Pauling electronegativity value for fluorine? I need it to figure out what kind of bond it forms with hydrogen.”
Engineering material properties check
“Can you pull up the melting point, boiling point, and density of tungsten from the periodic table? I'm checking if it can handle high-temperature conditions.”
Technical details
Endpoint
GEThttps://chemistry-calc.x402tookit.com/element-lookup?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative periodic table data — atomic properties, thermodynamic constants, electron configuration, or electronegativity — for a specific element identified by symbol, name, or atomic number. Prefer it over general chemistry calculation endpoints when the task is purely a property lookup rather than a formula computation or reaction calculation.
Side effects
- Unknown or misspelled element input returns null or error fields
- Ambiguous input (e.g. a number that doesn't correspond to a known element) may return empty results
- Some rare or synthetic elements may have null values for properties like electronegativity or boiling point
- Network or payment failure returns no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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