Information valid for Tb-159 unless otherwise noted
[ATOM]

Terbium

 [ATOM]

Basic Information


Symbol: Tb
Atomic Number: 65
Mass: 158.925
Melting Point: 1360
Boiling Point: 3041
Number of Protons/Electrons: 65
Number of Neutrons: 94
Classification: Rare Earth
Crystal Structure: Hexagonal
Density: 8.27
Color: silverish

Atomic Structure

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

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 27
    Fifth Energy Level: 8
    Sixth Energy Level: 2

Isotopes

Isotope Half Life
Tb-15117.61 hours
Tb-1555.3 days
Tb-1565.3 days
Tb-157110 years
Tb-158180 years
Tb-159Stable
Tb-16072.3 days
Tb-1616.91 days
Tb-1627.6 minutes

Facts


Date of Discovery: 1843
Discoverer: Carl Mosander
Name Origin: Ytterby (a town in Sweden)
Uses: in color TV's
Obtained From: with other rare earths

Related Links

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