(Gr.beryllos,beryl) Discovered by Vanquelin in 1798 in beryl and emeralds. Aquamarine and beryl are precious forms of the oxide beryl. One of the lightest metals, and one of the highest melting points of light metals.
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alkaline-earth metal, highly elastic, nonmagnetic, gray metal, resists corrosion and radiation,excellent thermal conductivity,elemental dust and salts are toxic.
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alloying agent for springs,electrodes and nonsparking tools,moderator in nuclear reactions