211f23de60bfe9f8…

Element
ID: 57353 bytesFirst seen Jun 12, 20261 collection

Fields

NameValue
atomicMass138.9055
atomicNumber57
blockf
boilingPointC3463.85
categoryIdlanthanide
density6.15
discoverernull
discoveryYear1839
electronConfiguration[Xe]6s2 5d1
electronegativity1.1
groupnull
meltingPointC917.85
nameLanthanum
period6
phaseSolid
symbolLa

Canonical JSON

{
  "id": "57",
  "type": "Element",
  "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"
  }
}

Appears in 1 collection

reference/periodic-table1 version · Jun 12, 2026

Full hash:211f23de60bfe9f8bbed733c52015f742ae8eb205409965961445e43a96e665b