Technetium vs Gold
| Property | Tc Technetium | Au Gold |
|---|---|---|
| Atomic number | 43 | 79 |
| Symbol | Tc | Au |
| Name | Technetium | Gold |
| Category | transition-metal | transition-metal |
| Standard Atomic Weight | 98 u | 196.966569 u |
| Period | 5 | 6 |
| Group | 7 | 11 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d5 | [Xe]6s14f145d10 |
| Oxidation states | [-3, -1, 1, 2, 3, 4, 5, 6, 7] | [-3, -2, -1, 0, 1, 2, 3, 5] |
| Electronegativity (Pauling) | 1.9 | 2.54 |
| Electron affinity | 0.55 eV | 2.3086 eV |
| Density | 1.100000e+4 kg/m³ | 1.928200e+4 kg/m³ |
| Melting point | 2156.85 °C | 1064.18 °C |
| Boiling point | 4264.85 °C | 2855.85 °C |
| Discovery year | 1937 | N/A |