e07844c21d57427e…
ElementID:
109372 bytesFirst seen Jun 12, 20261 collectionFields
| Name | Value |
|---|---|
| atomicMass | 277.154 |
| atomicNumber | 109 |
| block | d |
| boilingPointC | null |
| categoryId | transition-metal |
| density | null |
| discoverer | null |
| discoveryYear | 1982 |
| electronConfiguration | [Rn]7s2 5f14 6d7 (calculated) |
| electronegativity | null |
| group | 9 |
| meltingPointC | null |
| name | Meitnerium |
| period | 7 |
| phase | Solid |
| symbol | Mt |
Canonical JSON
{
"id": "109",
"type": "Element",
"data": {
"atomicMass": 277.154,
"atomicNumber": 109,
"block": "d",
"boilingPointC": null,
"categoryId": "transition-metal",
"density": null,
"discoverer": null,
"discoveryYear": "1982",
"electronConfiguration": "[Rn]7s2 5f14 6d7 (calculated)",
"electronegativity": null,
"group": 9,
"meltingPointC": null,
"name": "Meitnerium",
"period": 7,
"phase": "Solid",
"symbol": "Mt"
}
}Appears in 1 collection
reference/periodic-table1 version · Jun 12, 2026
Full hash:e07844c21d57427ee27a0f63b4bc99a2bf479d6bdb422b6f7fe150de4b9468bf