1775254303a2f5d1…

Element
ID: 101354 bytesFirst seen Jun 12, 20261 collection

Fields

NameValue
atomicMass258.09843
atomicNumber101
blockf
boilingPointCnull
categoryIdactinide
densitynull
discoverernull
discoveryYear1955
electronConfiguration[Rn]7s2 5f13
electronegativity1.3
groupnull
meltingPointC826.85
nameMendelevium
period7
phaseSolid
symbolMd

Canonical JSON

{
  "id": "101",
  "type": "Element",
  "data": {
    "atomicMass": 258.09843,
    "atomicNumber": 101,
    "block": "f",
    "boilingPointC": null,
    "categoryId": "actinide",
    "density": null,
    "discoverer": null,
    "discoveryYear": "1955",
    "electronConfiguration": "[Rn]7s2 5f13",
    "electronegativity": 1.3,
    "group": null,
    "meltingPointC": 826.85,
    "name": "Mendelevium",
    "period": 7,
    "phase": "Solid",
    "symbol": "Md"
  }
}

Appears in 1 collection

reference/periodic-table1 version · Jun 12, 2026

Full hash:1775254303a2f5d19f734b0a38f33f1177b80ee80254ed32af6a90c577aee5ea