Calcium vs Gold
| Property | Ca Calcium | Au Gold |
|---|---|---|
| Atomic number | 20 | 79 |
| Symbol | Ca | Au |
| Name | Calcium | Gold |
| Category | alkaline-earth-metal | transition-metal |
| Standard Atomic Weight | 40.078 u | 196.966569 u |
| Period | 4 | 6 |
| Group | 2 | 11 |
| Block | s | s |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s2 | [Xe]6s14f145d10 |
| Oxidation states | [1, 2] | [-3, -2, -1, 0, 1, 2, 3, 5] |
| Electronegativity (Pauling) | 1 | 2.54 |
| Electron affinity | 0.0245 eV | 2.3086 eV |
| Density | 1540 kg/m³ | 1.928200e+4 kg/m³ |
| Melting point | 841.85 °C | 1064.18 °C |
| Boiling point | 1483.85 °C | 2855.85 °C |
| Discovery year | 1808 | N/A |