| Element | Terbium | Symbol | Tb |
| Atomic Number | 65 | Molar Mass | 158.92 g mol-1 |
| Electron Configuration | [Xe]4f96s2 | Normal State | solid metal |
| Density @STP | 8.27 g cm-3 | Melting Point | 1356oC |
| Boiling Point | 3230oC | Stable Isotopes | 159Tb |
| Atomic Radius | 178 pm | Ionic Radius | 93 (3+) pm |
| Electronegativity (Pauling) | Ionization Energy (1st) | 565 kJ mol-1 | |
| Ionization Energy (2nd) | 1112 kJ mol-1 | Ionization Energy (3rd) | 2114 kJ mol-1 |
| Molar Heat Capacity | 28.9 J K-1mol-1 | Standard Molar Entropy | 73.2 J K-1mol-1 |
| Enthalpy of Fusion | 16.3 kJ mol-1 | Enthalpy of Vapourization | 391 kJ mol-1 |