Information valid for Ta-181 unless otherwise noted
[ATOM]

Tantalum

 [ATOM]

Basic Information


Symbol: Ta
Atomic Number: 73
Mass: 180.948
Melting Point: 2996
Boiling Point: 5425
Number of Protons/Electrons: 73
Number of Neutrons: 108
Classification: Transition Metal
Crystal Structure: Cubic
Density: 16.654
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

Isotopes

Isotope Half Life
Ta-1791.8 years
Ta-1801.2e+015 years
Ta-181Stable
Ta-182114.43 days

Facts


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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