Information valid for Dy-163 unless otherwise noted
[ATOM]

Dysprosium

 [ATOM]

Basic Information


Symbol: Dy
Atomic Number: 66
Mass: 162.5
Melting Point: 1412
Boiling Point: 2562
Number of Protons/Electrons: 66
Number of Neutrons: 97
Classification: Rare Earth
Crystal Structure: Hexagonal
Density: 8.536
Color: Unknown

Atomic Structure

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

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 28
    Fifth Energy Level: 8
    Sixth Energy Level: 2

Isotopes

Isotope Half Life
Dy-1543e+006 years
Dy-156Stable
Dy-1578.1 hours
Dy-158Stable
Dy-159144.4 days
Dy-160Stable
Dy-161Stable
Dy-162Stable
Dy-163Stable
Dy-164Stable
Dy-1652.3 hours
Dy-1663.4 days

Facts


Date of Discovery: 1886
Discoverer: Paul Emile Lecoq de Boisbaudran
Name Origin: From the Greek word dysprositos (hard to get at)
Uses: nuclear reactors
Obtained From: erbium, holmium

Related Links

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