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

Basic Information

Name: Dysprosium
Symbol: Dy
Atomic Number: 66
Atomic Mass: 162.5 amu
Melting Point: 1412.0 °C (1685.15 K, 2573.6 °F)
Boiling Point: 2562.0 °C (2835.15 K, 4643.6 °F)
Number of Protons/Electrons: 66
Number of Neutrons: 97
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.536 g/cm3
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


Isotope Half Life
Dy-1543000000.0 years
Dy-1578.1 hours
Dy-159144.4 days
Dy-1652.3 hours
Dy-1663.4 days


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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MLA Format for Citing This Page

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

For more information about citing online sources, please visit the MLA's Website.

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