Manganese vs Technetium
Pick up to 3 elements and see how they stack up.
| Property | Manganese | Technetium |
|---|---|---|
| Atomic number | 25 | 43 |
| Atomic mass | 54.938 | 98 |
| Electronegativity | 1.55 | 1.9 |
| Melting point | 1,519 K (1,245.8 °C) | 2,430 K (2,156.8 °C) |
| Boiling point | 2,334 K (2,060.8 °C) | 4,538 K (4,264.8 °C) |
| Density | 7.21 g/cm³ | 11 g/cm³ |
| Atomic radius | 197 pm | 209 pm |
| Ionization energy | 7.434 eV | 7.28 eV |
| Discovered | 1774 | 1937 |
| Category | Transition metal | Transition metal |
| State at room temp. | Solid | Solid |
| Block | d | d |
| Group | 7 | 7 |
| Period | 4 | 5 |
| Valence electrons | 2 | 2 |
| Common charges | +2, +3, +4, +7 | +4, +6, +7 |
| Electron configuration | [Ar] 3d5 4s2 | [Kr] 4d5 5s2 |