Tellurium
| Basic Information | Crystal Structure | Isotope | Facts | Related Links |
| Symbol: | Te |
| Atomic Number: | 52 |
| Atomic weight: | 127.6u |
| Melting Point: | 722.65K |
| Boiling Point: | 1261K |
| Number of Protons/Electrons: | 52 |
| Number of Neutrons: | 76 |
| Classification: | Metalliod |
| Crystal Structure: | Hexagonal |
| Density at 293 K: | 6.24g/mL |
| Color: | Silverish |
| Bonding radius: | 1.36A |
| Atomic radius: | 1.42A |
| Ionization Potential: | 9.009V |
| Electronegativity: | 2.1 |
| Heat of vaporization: | 52.55kJ/mol |
| Heat of fusion: | 17.49kJ/mol |
| Specific heat: | 0.2J/gK |
| Electron configuration: | [Kr]4d105s25p4 |
Crystal Structure
| Isotope | Half Life |
| Te119 | 4.69 days |
| Te120 | Stable |
| Te121 | 16.8 days |
| Te121m | 154 days |
| Te122 | Stable |
| Te123 | 1.3E12 years |
| Te123m | 119.7 days |
| Te124 | Stable |
| Te125 | Stable |
| Te125m | 58 days |
| Te126 | Stable |
| Te127 | 9.4 hours |
| Te127m | 109.0 days |
| Te128 | Stable |
| Te129 | 1.16 hours |
| Te129m | 33.6 days |
| Te130 | 2.5E21 years |
| Te131 | 25 minutes |
| Te131m | 1.35 days |
| Te132 | 3.26 days |
| Te133 | 12.4 minutes |
| Te133m | 55.4 minutes |
| Te134 | 41.8 minutes |
| Date of Discovery: | 1728 |
| Discoverer: | Franz Muller von Reichenstein |
| Uses: | Coloring of glass and ceramics, thermoelectric devices |
| Obtained From: | By-product of refining of lead and copper |