About This Site
Comments
Help
Links
Show Table With:
Name
Atomic Number
Atomic Mass
Electron Configuration
Number of Neutrons
Melting Point
Boiling Point
Date of Discovery
Crystal Structure
Element Groups:
Alkali Metals
Alkaline Earth Metals
Transition Metals
Other Metals
Metalloids
Non-Metals
Halogens
Noble Gases
Rare Earth Elements
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]](../bohr/b0012.gif) |
Number of Energy Levels: 3 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 2 |
Isotopes
| Isotope | Half Life |
| Mg-24 | Stable |
| Mg-25 | Stable |
| Mg-26 | Stable |
| Mg-27 | 9.45 minutes |
| Mg-28 | 21.0 hours |
Facts
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- Healthworld Online - Magnesium
- Contains an "Introduction to Tungsten", among other things
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.
This page was created by Yinon Bentor.
Use of this web site is restricted by this site's license
agreement.
Copyright © 1996-2012 Yinon Bentor. All Rights Reserved.