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{
  "id": "72",
  "type": "Element",
  "data": {
    "atomicMass": 178.49,
    "atomicNumber": 72,
    "block": "d",
    "boilingPointC": 4602.85,
    "categoryId": "transition-metal",
    "density": 13.3,
    "discoverer": null,
    "discoveryYear": "1923",
    "electronConfiguration": "[Xe]6s2 4f14 5d2",
    "electronegativity": 1.3,
    "group": 4,
    "meltingPointC": 2232.85,
    "name": "Hafnium",
    "period": 6,
    "phase": "Solid",
    "symbol": "Hf"
  }
}