Calcium vs Tellurium
| Property | Ca Calcium | Te Tellurium |
|---|---|---|
| Atomic number | 20 | 52 |
| Symbol | Ca | Te |
| Name | Calcium | Tellurium |
| Category | alkaline-earth-metal | metalloid |
| Standard Atomic Weight | 40.078 u | 127.6 u |
| Period | 4 | 5 |
| Group | 2 | 16 |
| Block | s | p |
| Phase at STP | solid | solid |
| Electron configuration | [Ar]4s2 | [Kr]5s24d105p4 |
| Oxidation states | [1, 2] | [-2, -1, 0, 1, 2, 3, 4, 5, 6] |
| Electronegativity (Pauling) | 1 | 2.1 |
| Electron affinity | 0.0245 eV | 1.9708 eV |
| Density | 1540 kg/m³ | 6232 kg/m³ |
| Melting point | 841.85 °C | 449.51 °C |
| Boiling point | 1483.85 °C | 987.85 °C |
| Discovery year | 1808 | 1782 |