Magnesium, Mg

Magnesium is a chemical element with the symbol Mg, the atomic number 12, and an atomic mass of 24.31. Magnesium is the ninth most abundant element in the universe by mass.[citation needed] It constitutes about 2% of the Earth's crust by mass, and it is the third most abundant element dissolved in seawater.[citation needed] Magnesium ions are essential to all living cells, and is the 11th most abundant element by mass in the human body. The free element (metal) is not found in nature. Once produced from magnesium salts, this alkaline earth metal is used as an alloying agent to make aluminium-magnesium alloys, sometimes called "magnalium" or "magnelium".

Technical Data
Symbol Mg Ionization energy/kJmol-1 II 1450
Atomic number 12 Density (20°C)/gcm-3 1.738
No. of naturally occurring isotopes 3 Melting point /°C 649
Atomic weight 24.305 Boiling point /°C 1105
Electronic configuration [Ne]3s2 ΔHfus/kJmol-1 8.9
Metal radius/pm 160 ΔHvap/kJmol-1 127.4
Ionic radius(6-coordinate)/pm 72 Eo(M2+(aq)+ 2e- →M(S))/V -2.37
Ionization energy/kJmol-1 I 737.5 Electrical resistivity (20°C)/μohm cm 4.46
Evaporation Techniques
Temperature (oC) @Vap. Pressure Techniques Remarks
10-8 Torr 10-6 Torr 10-4 Torr Electron Beam Crucible Coil Boat
185 Sublimes 247 Sublimes 327 Sublimes Good Al2O3 & Vitreous Graphite Tungsten Tungsten, Molybdenum, Niobium & Tantalum Extremely high rates possible

Evaporation Materials
M1-5002-M Ingot (Please ask for sizes)
M1-5000-M pieces 1-5 mm

The foils are available in either rectangular or circular shape. Please enter width and length or diameter of the required foil.

Foil
M1-3000-F 0.004" (0.1mm)
M1-3003-F 0.008" (0.2mm)
Powder
M1-10000-P -100 mesh
M1-10003-P -325 mesh
Rods
M1-2000-R 0.0625" (1.58mm)
M1-2001-R 0.125" (3.175mm)
M1-2002-R 0.375" (9.25mm)
Sheet
M1-4001-S 0.020" (0.5mm)
M1-4002-S 0.030" (0.76mm)
M1-4003-S 0.040" (1mm)
M1-4004-S 0.125" (3.175mm)