Element | Technetium | Symbol | Tc |
Atomic Number | 43 | Molar Mass | 98.91 gmol-1 |
Electron Configuration | [Kr]4d55s2 | Normal State | solid metal |
Density @STP | 11.5 g cm-3 | Melting Point | 2157oC |
Boiling Point | 4265oC | Stable Isotopes | none |
Atomic Radius | 135 pm | Ionic Radius | 97 (4+) pm |
Electronegativity (Pauling) | 1.9 | Ionization Energy (1st) | 702 kJ mol-1 |
Ionization Energy (2nd) | 1472 kJ mol-1 | Ionization Energy (3rd) | 2850 kJ mol-1 |
Molar Heat Capacity | 20.8 J K-1mol-1 | Standard Molar Entropy | 181.1 J K-1mol-1 |
Enthalpy of Fusion | 23.81 kJ mol-1 | Enthalpy of Vapourization | 585.22 kJ mol-1 |