27 Nisan 2009 Pazartesi

Magnesium

Element type: Metal
Relative atomic mass: 24.31
Discoverer: David
Found that age: 1808
Chemical formula: Mg
Proton nuclear number: 12
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Physical properties: silver-white metal, the density of 1.738 grams / cm 3, melting point 648.9 ℃. Boiling point 1090 ℃. Valence +2, ionization energy 7.646 eV, is one of light metal with a scalable, non-magnetic metal magnesium and a good dissipation of heat.
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So commonly used reducing agent, to replacement of titanium, zirconium, uranium, beryllium and other metal. Mainly used in the manufacture of light metal alloys, ductile iron, scientific instruments and dehydrogenation desulfurizer Grignard reagent, but also can be used for system fireworks, flash powder, magnesium salt and so on. Magnesium is an important material for the aviation industry, magnesium alloy and the sum used in the manufacture of aircraft engine parts; Magnesium is also used in the production of photographic and optical equipment, etc.; magnesium and its alloys of non-structural applications is broad; magnesium as a strong reduction agent, but also for titanium, zirconium, beryllium, uranium and the production of hafnium.
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