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

Basic Information

Name: Holmium
Symbol: Ho
Atomic Number: 67
Atomic Mass: 164.93031 amu
Melting Point: 1470.0 °C (1743.15 K, 2678.0 °F)
Boiling Point: 2720.0 °C (2993.15 K, 4928.0 °F)
Number of Protons/Electrons: 67
Number of Neutrons: 98
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 8.54 g/cm3
Color: Silver

Atomic Structure

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

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 29
    Fifth Energy Level: 8
    Sixth Energy Level: 2


Isotope Half Life
Ho-1634570.0 years
Ho-1661.1 days
Ho-166m1200.0 years


Date of Discovery: 1878
Discoverer: J.L. Soret
Name Origin: Form the Latin word Holmia (Stockholm)
Uses: nuclear reactors
Obtained From: gadolinite

Related Links

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MLA Format for Citing This Page

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

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