f25420616d95f142…
ElementID:
111390 bytesFirst seen Jun 12, 20261 collectionFields
| Name | Value |
|---|---|
| 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 |
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