Basic Information
Name: TelluriumSymbol: TeAtomic Number: 52Atomic Mass: 127.6 amuMelting Point: 449.5 °C (722.65 K, 841.1 °F)Boiling Point: 989.8 °C (1262.95 K, 1813.64 °F)Number the Protons/Electrons: 52Number that Neutrons: 76Classification: MetalloidCrystal Structure: HexagonalDensityYou are watching: How many electrons does tellurium have
293 K: 6.24 g/cm3Color: silverish
Atomic Structure
Number of power Levels: 5First energy Level: 2Second energy Level: 8Third energy Level: 18Fourth energy Level: 18Fifth power Level: 6Isotopes
| Isotope | Half Life |
| Te-119 | 4.69 days |
| Te-120 | Stable |
| Te-121 | 16.8 days |
| Te-121m | 154.0 days |
| Te-122 | Stable |
| Te-123 | 1.3E12 years |
| Te-123m | 119.7 days |
| Te-124 | Stable |
| Te-125 | Stable |
| Te-125m | 58.0 days |
| Te-126 | Stable |
| Te-127 | 9.4 hours |
| Te-127m | 109.0 days |
| Te-128 | Stable |
| Te-129 | 1.16 hours |
| Te-129m | 33.6 days |
| Te-130 | 2.5E21 years |
| Te-131 | 25.0 minutes |
| Te-131m | 1.35 days |
| Te-132 | 3.26 days |
| Te-133 | 12.4 minutes |
| Te-133m | 55.4 minutes |
| Te-134 | 41.8 minutes |
Facts
Date the Discovery: 1782Discoverer: Franz Muller von ReichensteinName Origin: indigenous the Greek word tellus (Earth)Uses: coloring of glass and also ceramics, thermoelectric devicesObtained From: by-product that refining that lead and copperRelated Links
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