Element at v1.0.0
57
211f23de60bfe9f8bbed733c52015f742ae8eb205409965961445e43a96e665b · where else it appears
Data
{
"atomicMass": 138.9055,
"atomicNumber": 57,
"block": "f",
"boilingPointC": 3463.85,
"categoryId": "lanthanide",
"density": 6.15,
"discoverer": null,
"discoveryYear": "1839",
"electronConfiguration": "[Xe]6s2 5d1",
"electronegativity": 1.1,
"group": null,
"meltingPointC": 917.85,
"name": "Lanthanum",
"period": 6,
"phase": "Solid",
"symbol": "La"
}History in this collection
- addedv1.0.0Jun 12, 2026this version