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

Basic Information

Name: Magnesium
Symbol: Mg
Atomic Number: 12
Atomic Mass: 24.305 amu
Melting Point: 650.0 °C (923.15 K, 1202.0 °F)
Boiling Point: 1107.0 °C (1380.15 K, 2024.6 °F)
Number of Protons/Electrons: 12
Number of Neutrons: 12
Classification: Alkaline Earth
Crystal Structure: Hexagonal
Density @ 293 K: 1.738 g/cm3
Color: grayish

Atomic Structure

[Bohr Model of Magnesium]  
Number of Energy Levels: 3

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 2


Isotope Half Life
Mg-279.45 minutes
Mg-2821.0 hours


Date of Discovery: 1808
Discoverer: Sir Humphrey Davy
Name Origin: Magnesia (City)
Uses: airplanes, missiles
Obtained From: sea water

Related Links

Note: The external links below are not a part of this site and their content is not the responsibility of this site
  1. Healthworld Online - Magnesium
    • Contains an "Introduction to Tungsten", among other things
If you know of any other links for Magnesium, please let me know

MLA Format for Citing This Page

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

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

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