Helium vs Germanium
| Property | He Helium | Ge Germanium |
|---|---|---|
| Atomic number | 2 | 32 |
| Symbol | He | Ge |
| Name | Helium | Germanium |
| Category | noble-gas | metalloid |
| Standard Atomic Weight | 4.002602 u | 72.63 u |
| Period | 1 | 4 |
| Group | 18 | 14 |
| Block | s | p |
| Phase at STP | gas | solid |
| Electron configuration | 1s2 | [Ar]4s23d104p2 |
| Oxidation states | [0] | [-4, -3, -2, -1, 0, 1, 2, 3, 4] |
| Electronegativity (Pauling) | N/A | 2.01 |
| Electron affinity | -0.5 eV | 1.232 eV |
| Density | 0.1785 kg/m³ | 5323.4 kg/m³ |
| Melting point | -272.2 °C | 938.25 °C |
| Boiling point | -268.93 °C | 2832.85 °C |
| Discovery year | 1868 | 1886 |