Silicon vs Cobalt
| Property | Si Silicon | Co Cobalt |
|---|---|---|
| Atomic number | 14 | 27 |
| Symbol | Si | Co |
| Name | Silicon | Cobalt |
| Category | metalloid | transition-metal |
| Standard Atomic Weight | 28.085 u | 58.933194 u |
| Period | 3 | 4 |
| Group | 14 | 9 |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ne]3s23p2 | [Ar]4s23d7 |
| Oxidation states | [-4, -3, -2, -1, 0, 1, 2, 3, 4] | [-3, -1, 0, 1, 2, 3, 4, 5] |
| Electronegativity (Pauling) | 1.9 | 1.88 |
| Electron affinity | 1.385 eV | 0.661 eV |
| Density | 2329.6 kg/m³ | 8860 kg/m³ |
| Melting point | 1413.85 °C | 1494.85 °C |
| Boiling point | 3264.85 °C | 2926.85 °C |
| Discovery year | 1824 | 1735 |