Atomic Properties
- Atomic Number
- 101
- Atomic Mass
- 258.0000 u
- Electron Configuration
- [Rn] 5f13 7s2
- Electronegativity
- 1.30
- Block
- f-block
- Group
- —
- Period
- 7
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 1100.00 K
- Boiling Point
- —
- Density
- 10.3000 g/cm³
About Mendelevium
Named after Dmitri Mendeleev, creator of the periodic table.
Isotopes of Mendelevium
Mendelevium has 0 naturally occurring isotopes, plus 2 notable radioactive isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 258Md | 258 | 258.0984315 | — | Radioactive |
| 260Md | 260 | 260.10365 | — | Radioactive |
Data source: NIH PubChem (aggregated from IUPAC, NIST)