Element at v1.0.0
101
1775254303a2f5d19f734b0a38f33f1177b80ee80254ed32af6a90c577aee5ea · where else it appears
Data
{
"atomicMass": 258.09843,
"atomicNumber": 101,
"block": "f",
"boilingPointC": null,
"categoryId": "actinide",
"density": null,
"discoverer": null,
"discoveryYear": "1955",
"electronConfiguration": "[Rn]7s2 5f13",
"electronegativity": 1.3,
"group": null,
"meltingPointC": 826.85,
"name": "Mendelevium",
"period": 7,
"phase": "Solid",
"symbol": "Md"
}History in this collection
- addedv1.0.0Jun 12, 2026this version