Aluminum vs Silicon
Pick up to 3 elements and see how they stack up.
| Property | Aluminum | Silicon |
|---|---|---|
| Atomic number | 13 | 14 |
| Atomic mass | 26.982 | 28.085 |
| Electronegativity | 1.61 | 1.9 |
| Melting point | 933.47 K (660.3 °C) | 1,687 K (1,413.8 °C) |
| Boiling point | 2,743 K (2,469.8 °C) | 3,538 K (3,264.8 °C) |
| Density | 2.7 g/cm³ | 2.329 g/cm³ |
| Atomic radius | 184 pm | 210 pm |
| Ionization energy | 5.986 eV | 8.152 eV |
| Discovered | 1825 | 1823 |
| Category | Post-transition metal | Metalloid |
| State at room temp. | Solid | Solid |
| Block | p | p |
| Group | 13 | 14 |
| Period | 3 | 3 |
| Valence electrons | 3 | 4 |
| Common charges | +3 | +4, −4 |
| Electron configuration | [Ne] 3s2 3p1 | [Ne] 3s2 3p2 |