beryllium
Noun
Meaning
A metallic element found in the beryl. See Glucinum.
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A coordination of 4 allows beryllium compounds, such as the fluoride or chloride, to form polymers.
All the alkaline earth metals except beryllium also react with water to form strongly alkaline hydroxides and, thus, should be handled with great care.
Aqueous ammonia is then used to remove the aluminium and sulfur, leaving beryllium hydroxide.
An alternative to the ISOL techniques described here is that of fragmentation beams, where the radioactive ions are produced by fragmentation reactions on a fast beam of stable ions impinging on a thin target (usually of beryllium atoms).
A solution of sodium fluoroberyllate and sodium hydroxide in water is then used to form beryllium hydroxide by precipitation.
Because JWST will face a temperature of 33 K, the mirror is made of gold-plated beryllium, capable of handling extreme cold better than glass.