f25420616d95f142…

Element
ID: 111390 bytesFirst seen Jun 12, 20261 collection

Fields

NameValue
atomicMass282.169
atomicNumber111
blockd
boilingPointCnull
categoryIdtransition-metal
densitynull
discoverernull
discoveryYear1994
electronConfiguration[Rn]7s2 5f14 6d9 (predicted)
electronegativitynull
group11
meltingPointCnull
nameRoentgenium
period7
phaseExpected to be a Solid
symbolRg

Canonical JSON

{
  "id": "111",
  "type": "Element",
  "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"
  }
}

Appears in 1 collection

reference/periodic-table1 version · Jun 12, 2026

Full hash:f25420616d95f142ee405e318b0392f034d49d28dd1434bc30f4540e9d104dc6