Metals
- Elements List
- Aluminium, Al
- Antimony, Sb
- Arsenic, As
- Barium, Ba
- Beryllium, Be
- Bismuth, Bi
- Boron, B
- Cadmium, Cd
- Calcium, Ca
- Carbon, C (Graphite)
- Cerium, Ce
- Cesium, Cs
- Chromium, Cr
- Cobalt, Co
- Copper, Cu
- Dysprosium, Dy
- Erbium, Er
- Europium, Eu
- Gadolinium, Gd
- Gallium, Ga
- Germanium, Ge
- Gold, Au
- Hafnium, Hf
- Holmium, Ho
- Indium, In
- Iridium, Ir
- Iron, Fe
- Lanthanum, La
- Lead, Pb
- Lithium, Li
- Lutetium, Lu
- Magnesium, Mg
- Manganese, Mn
- Mercury, Hg
- Molybdenum, Mo
- Neodymium, Nd
- Nickel, Ni
- Niobium, Nb
- Osmium, Os
- Palladium, Pd
- Phosphorus, P
- Platinum, Pt
- Potassium, K
- Praseodymium, Pr
- Rhenium, Re
- Rhodium, Rh
- Rubidium, Rb
- Ruthenium, Ru
- Samarium, Sm
- Scandium, Sc
- Selenium, Se
- Silicon, Si
- Silver, Ag
- Sodium, Na
- Strontium, Sr
- Sulphur, S
- Tantalum, Ta
- Tellurium, Te
- Terbium, Tb
- Thallium, Tl
- Thorium, Th
- Thulium, Tm
- Tin, Sn
- Titanium, Ti
- Tungsten, W
- Vanadium, V
- Ytterbium, Yb
- Yttrium, Y
- Zinc, Zn
- Zirconium, Zr
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Magnesium, Mg
Description
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".
Available Forms:
| 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 Go to Evaporation Sources Page | |
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