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#3676 |
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Beryllium aluminum silicate Pure Beryllium
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#3677 |
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The word Beryllium comes from Greek. It was also called Glucinium, from the Greek word for sweet, glykys. Beryllium tastes sweet, but should not be eaten to verify this.
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#3678 |
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The Egyptians knew of both emerald and beryl, both forms of beryllium aluminum silicate. A French chemist, Nicholas Louis Vauquelin, determined Beryllium to be a distinct element in 1797, but it was not isolated until 1828, when the German chemist Friedrich Wöhler sucessfully isolated Beryllium from Beryllium Chloride.
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#3679 |
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The structure of a Beryllium atom is shown below.
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#3680 |
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Beryllium is in the second column of the periodic table, meaning that it has two valence electrons. It commonly combines with Aluminum, Silicon and Oxygen to form beryllium aluminum silicate, and also Flourine and Chlorine to form beryllium flouride and beryllium chloride, respectively.
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#3681 |
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Why do people want Beryllium, anyway?
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#3682 |
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Beryllium is one of the lightest metals, and it also has a very high melting point of 1287 degrees celsius. In case you're wondering how that relates to anything, at 1287 degrees celsius a person would be instantly incinerated. Ouch. It is also easily permeable by X-rays and is highly conductive of heat. What's not to love?
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#3683 |
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Generally, Beryllium is used to make the alloy Beryllium Copper, which is used in such handy devices as springs, electrical contacts, aircraft parts, missiles, spacecraft parts, brake discs on the space shuttle, and other myriad, useful and edible items. Well, not edible, but useful and diverse.
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#3684 |
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Other stuff about Beryllium
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#3685 |
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Beryllium is dangerous. It is known to be carcinogenic in humans. Curiously, beryllium tastes sweet but since it is toxic this is not a recommended way to test for the presence of beryllium. There are many safeguards for working with beryllium.
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#3686 |
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Beryllium Disease, or Berylliosis, resembles pneumonia or bronchitis and comes from overexposure to pure beryllium dust in the air. Most people do not develope this disease from exposure to compounds containing Beryllium. Berylliosis occurs in about 6% of people who are exposed to Beryllium. Development of the disease is determined by genetic susceptiblilty. In its early stages, Berylliosis does not require treatment. However, if left unnoticed, it can lead to severely debilitating coughs, shortness of breath and fatigue. In later stages, Beryllosis is treated with prednisone.
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#3687 |
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Beryllium can also be extremely hazardous when it enters the bloodstream. Fragments of Beryllium are highly dangerous in cuts and open sores and cause infection. If the wound heals around the fragment, it may have to be surgically removed.
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#3688 |
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How do you get Beryllium?
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#3689 |
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Since Beryllium is not found in its pure form in nature, several different ways have been devised to isolate it from various compounds. Beryllium can be isolated from beryl through a very long and complicated process involving several stages, which I don't fully understand. It can also be isolated from Beryllium Chloride (BeCL2) via electrolysis, or from Beryllium Flouride (BeFl2) by combination with magnesium.
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#3690 |
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Sources and Further reading
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