Electronic data		Thermal data		Steric data
Shells: 2,8,2 Orbitals: [Ne] 3s2 Electronegativity: 1.2, 1.2 1. Ionization potential: 7.6462 eV 2. Ionization potential: 15.035 eV 3. Ionization potential: 80.143 eV Oxidation states: 2 Electrical conductivity: 0.226 10^6		Melting point: 648.8 °C Boiling point: 1090 °C Specific heat: 1.02 J/gK Heat of fusion: 8.954 kJ/mol Heat of vaporization: 127.40 kJ/mol Thermal conductivity: 1.56 W/cmK		Atomic radius: 1.72 Å Ionic radius: 0.72 Å () Covalent radius: 1.36 Å Atomic volume: 13.97 cm³/mol Density (293 K): 1.738 g/cm³ Crystal structure: Hexagonal

Legend     Pocket calculator

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
24Mg	78.7	23.985	0	--	stable	--
25Mg	10.13	24.9858	5/2	--	stable	--
26Mg	11.17	25.9826	0	--	stable	--
27Mg	0	27	1/2	9.45m	-	View
28Mg	0	28	0	21.0h	-	View

Legend

Name origin:	From Magnesia ancient city in district of Thessaly, Greece
Description:	Lightweight, malleable, silvery-white metal. Eighth most abundant element in the universe. Seventh most abundant element in the earth's crust.
Discovered by:	Sir Humphrey Davy
Year:	1808
Place:	England
Sources:	Usually obtained by electrolysis of melted magnesium chloride (MgCl2) found in sea water. Each cubic mile of seawater contains about 12 billion pounds of magnesium.
Use(s):	Used in alloys to make airplanes, missiles and other uses for light metals. Has structural properties similar to aluminium. But since it is flammable at temperatures of burning gasoline, its uses are limited.