Information valid for Th-232 unless otherwise noted
[ATOM]

Thorium

 [ATOM]

Basic Information


Symbol: Th
Atomic Number: 90
Mass: 232.038
Melting Point: 1750
Boiling Point: 4790
Number of Protons/Electrons: 90
Number of Neutrons: 142
Classification: Rare Earth
Crystal Structure: Cubic
Density: 11.72
Color: silvery

Atomic Structure

[Bohr Model of Thorium]  
Number of Energy Levels: 7

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 18
    Sixth Energy Level: 10
    Seventh Energy Level: 2

Isotopes

Isotope Half Life
Th-22630.6 minutes
Th-22718.72 days
Th-2281.91 years
Th-2297340 years
Th-23075400 years
Th-2311.06 days
Th-2321.4e+010 years
Th-23322.3 minutes
Th-23424.1 days

Facts


Date of Discovery: 1828
Discoverer: Jons Berzelius
Name Origin: Thor (Scandinavian god)
Uses: strong alloys, ultraviolet photoelectric cells
Obtained From: monazite, thorite

Related Links

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  1. Cafe Thorium
If you know of any other links for Thorium, please let me know
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