| Element | Mendelevium | Symbol | Md |
| Atomic Number | 101 | Molar Mass | 258.1 g mol-1 |
| Electron Configuration | [Rn]5f137s2 | Normal State | solid metal |
| Density @STP | g cm-3 | Melting Point | 827oC |
| Boiling Point | oC | Stable Isotopes | none |
| Atomic Radius | Ionic Radius | 90 (3+) pm | |
| Electronegativity (Pauling) | 1.3 | Ionization Energy (1st) | 635 kJ mol-1 |
| Ionization Energy (2nd) | 1235 kJ mol-1 | Ionization Energy (3rd) | 2451 kJ mol-1 |
| Molar Heat Capacity | J K-1mol-1 | Standard Molar Entropy | J K-1mol-1 |
| Enthalpy of Fusion | kJ mol-1 | Enthalpy of Vapourization | kJ mol-1 |