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Tantalum at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Tantalum
Symbol: Ta
Atomic Number: 73
Atomic Mass: 180.9479 amu
Melting Point: 2996.0 °C (3269.15 K, 5424.8 °F)
Boiling Point: 5425.0 °C (5698.15 K, 9797.0 °F)
Number of Protons/Electrons: 73
Number of Neutrons: 108
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 16.654 g/cm3
Color: gray

Atomic Structure

[Bohr Model of Tantalum]  
Number of Energy Levels: 6

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 11
    Sixth Energy Level: 2


Isotope Half Life
Ta-1791.8 years
Ta-1801.2E15 years
Ta-182114.43 days


Date of Discovery: 1802
Discoverer: Anders Ekeberg
Name Origin: After king Tantalus (Greek mythology)
Uses: capacitors, camera lenses
Obtained From: tantalite

Related Links

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MLA Format for Citing This Page

Bentor, Yinon. Chemical Element.com - Tantalum. <http://www.chemicalelements.com/elements/ta.html>.

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