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Beryllium oxide (BeO), also known as beryllia, is an inorganic compound with the formula BeO. This colourless solid is an electrical insulator with a higher thermal conductivity than any other non-metal except diamond , and exceeds that of most metals. [ 12 ]
Beryllium oxide is useful for many applications that require the combined properties of an electrical insulator and an excellent heat conductor, with high strength and hardness and a very high melting point. Beryllium oxide is frequently used as an insulator base plate in high-power transistors in radio frequency transmitters for
All compounds that include beryllium have a covalent bond. [11] Even the compound beryllium fluoride, which is the most ionic beryllium compound, has a low melting point and a low electrical conductivity when melted. [12] [13] [14]
This page provides supplementary chemical data on beryllium oxide. Material Safety Data Sheet. Beryllium Oxide MSDS from American Beryllia; Structure and properties
In general, beryllium has a tendency to bond covalently, much more so than the other alkaline earths and its fluoride is partially covalent (although still more ionic than its other halides). BeF 2 has many similarities to SiO 2 (quartz) a mostly covalently bonded network solid .
The beryllium oxide helium adduct, HeBeO is believed to be bonded much more strongly than a normal van der Waals molecule with about 5 kcal/mol of binding energy. The bond is enhanced by a dipole induced positive charge on beryllium, and a vacancy in the σ orbital on beryllium where it faces the helium. [100] [101]
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Separate values for each source are only given where one or more sources differ. Electronegativity is not a uniquely defined property and may depend on the definition.