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Zombies.
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It's the number one google hit for beryllium thread. |
Name: Beryllium
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Symbol: Be
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Atomic number: 4
Atomic weight: 9.012182 (3) |
Standard state: solid at 298 K
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Colour: lead grey
Classification: Metallic |
Group name: Alkaline earth metal
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Group in periodic table: 2
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Isolation:
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beryllium metal is available commercially and so would never normally be made in the laboratory. Its extraction from ores is complex. The mineral beryl, [Be3Al2(SiO3)6] is the most important source of beryllium. It is roasted with sodimu hexafluorosilicate, Na2SiF6, at 700°C to form beryllium fluoride. This is water soluble and the beryllium may be precipitated as the hydroxide Be(OH)2 by adjustment of the pH to 12.
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Pure beryllium may be obtained by electrolysis of molten BeCl2 containing some NaCl.
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The salt is added since the molten BeCl2 conducts very poorly.
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Another method involves the reduction of beryllium fluoride with magnesium at 1300°C.
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