Hydrogen vs Technetium
Side-by-side comparison of Hydrogen (H, element 1) and Technetium (Tc, element 43) by atomic structure and physical properties.
| Property | H Hydrogen | Tc Technetium |
|---|---|---|
| Atomic number | 1 | 43 |
| Symbol | H | Tc |
| Name | Hydrogen | Technetium |
| Category | nonmetal | transition-metal |
| Standard Atomic Weight | 1.007975 u | 98 u |
| Period | 1 | 5 |
| Group | 1 | 7 |
| Block | s | d |
| Phase at STP | Gas | Solid |
| Electron configuration | 1s1 | [Kr]5s24d5 |
| Oxidation states | [-1, 1] | [-3, -1, 1, 2, 3, 4, 5, 6, 7] |
| Electronegativity (Pauling) | 2.2 | 1.9 |
| Electron affinity | 0.75419 eV | 0.55 eV |
| Density | 0.08988 kg/m³ | 1.1e+4 kg/m³ |
| Melting point | -259.193 °C | 2156.85 °C |
| Boiling point | -252.781 °C | 4264.85 °C |
| Discovery year | 1766 | 1937 |
Key Differences
| Property | H Hydrogen | Tc Technetium |
|---|---|---|
| Standard Atomic Weight | 1.007975 u ↓ lower | 98 u ↑ higher |
| Density | 0.08988 kg/m³ ↓ lower | 1.1e+4 kg/m³ ↑ higher |
| Melting point | -259.193 °C ↓ lower | 2156.85 °C ↑ higher |
| Boiling point | -252.781 °C ↓ lower | 4264.85 °C ↑ higher |
| Electronegativity (Pauling) | 2.2 ↑ higher | 1.9 ↓ lower |
| Electron affinity | 0.75419 eV ↑ higher | 0.55 eV ↓ lower |
| Period | 1 | 5 |
| Group | 1 | 7 |
| Block | s | d |
| Category | nonmetal | transition-metal |
| Phase at STP | Gas | Solid |
| Electron configuration | 1s1 | [Kr]5s24d5 |
| Discovery year | 1766 | 1937 |