111

f25420616d95f142ee405e318b0392f034d49d28dd1434bc30f4540e9d104dc6 · where else it appears

Data

{
  "atomicMass": 282.169,
  "atomicNumber": 111,
  "block": "d",
  "boilingPointC": null,
  "categoryId": "transition-metal",
  "density": null,
  "discoverer": null,
  "discoveryYear": "1994",
  "electronConfiguration": "[Rn]7s2 5f14 6d9 (predicted)",
  "electronegativity": null,
  "group": 11,
  "meltingPointC": null,
  "name": "Roentgenium",
  "period": 7,
  "phase": "Expected to be a Solid",
  "symbol": "Rg"
}

History in this collection

addedv1.0.0Jun 12, 2026this version