Information valid for Te-128 unless otherwise noted
[ATOM]

Tellurium

 [ATOM]

Basic Information


Symbol: Te
Atomic Number: 52
Mass: 127.6
Melting Point: 449.5
Boiling Point: 989.8
Number of Protons/Electrons: 52
Number of Neutrons: 76
Classification: Metalloid
Crystal Structure: Hexagonal
Density: 6.24
Color: silverish

Atomic Structure

[Bohr Model of Tellurium]  
Number of Energy Levels: 5

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 18
    Fifth Energy Level: 6

Isotopes

Isotope Half Life
Te-1194.69 days
Te-120Stable
Te-12116.8 days
Te-121m154 days
Te-122Stable
Te-1231.3e+012 years
Te-123m119.7 days
Te-124Stable
Te-125Stable
Te-125m58 days
Te-126Stable
Te-1279.4 hours
Te-127m109 days
Te-128Stable
Te-1291.16 hours
Te-129m33.6 days
Te-1302.5e+021 years
Te-13125 minutes
Te-131m1.35 days
Te-1323.26 days
Te-13312.4 minutes
Te-133m55.4 minutes
Te-13441.8 minutes

Facts


Date of Discovery: 1728
Discoverer: Franz Muller von Reichenstein
Name Origin: From the Greek word tellus (Earth)
Uses: coloring of glass and ceramics, thermoelectric devices
Obtained From: by-product of refining of lead and copper

Related Links

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