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Md
Mendelevium
#101 · Actinide
| Mass | 258.09843 u |
| Density | 10.3 g/cm³ |
| Melting | 1100.0 K |
| Electronegativity | 1.3 |
| Ionization Energy | 635.0 kJ/mol |
| Block | f-block |
| State (RT) | Solid |
| Config | [Rn] 5f13 7s2 |