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Beryllium Hydroxide
Magnesium hydroxide Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). N verify (what is YN ?) Infobox references BERYLLIUM HYDROXIDE, Be(OH)2, is an amphoteric hydroxide , dissolving in both acids and alkalis . Industrially, it is produced as a by-product in the extraction of beryllium metal from the ores beryl and bertrandite . The natural pure beryllium hydroxide is rare (in form of the mineral behoite, orthorhombic) or very rare (clinobehoite, monoclinic). When alkali is added to beryllium salt solutions the α-form (a gel) is formed. If this left to stand or boiled, the rhombic β-form precipitates. This has the same structure as zinc hydroxide , Zn(OH)2, with tetrahedral beryllium centers. REACTIONSWith alkalis it dissolves to form the tetrahydroxidoberyllate(2-) anion. With sodium hydroxide solution: 2NaOH(aq) + Be(OH)2(s) → Na2Be(OH)4(aq) With acids, beryllium salts are formed

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