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- 2. Lecture plan General characteristic of beryllium Occurrence Preparation of beryllium Physical properties of beryllium Chemical properties
- 3. Beryllium Beryllium was first discovered in 1794 by french chemists Nicholas Vauquelin.The name beryllium comes from
- 4. Beryllium is located in the Periodic table in the second A group and the second period.
- 5. Beryllium is a steel gray and hard metal that is brittle at room temperature and has
- 6. Occurrence The Sun has a concentration of 0.1 parts per billion of beryllium. Beryllium has a
- 7. Minerals of Beryllium Red Beryl Emerald Aquamarine White beryl
- 8. Chrysoberyl Phenakit Heliodorous Morganite
- 9. Preparation Friedrich Wöhler and Antoine Bussy independently isolated beryllium in 1828 by the chemical reaction of
- 10. Chemical properties The chemical properties of beryllium are very similar to aluminium. It has only +2
- 11. Beryllium reacts with diluted H2SO4 and HNO3 solutions. Be+ H2SO4 (dil) →BeSO4+H2↑ 3Be+ 8HNO3 (dil) →
- 12. Beryllium reacts with nonmetals and several compounds at high temperature: 2Be+O2 → 2BeO Be+N2 650º C
- 13. Since beryllium is an amphoteric metal it also reacts with strong bases and liberates H2 gas
- 14. Compounds Beryllium oxide Beryllium oxide, BeO, is a white refractory solid, which has the wurtzite crystal
- 15. Beryllium hydroxide Beryllium hydroxide, Be(OH)2, is an amphoteric hydroxide, dissolving in both acids and alkalis. Industrially,
- 16. With acids, beryllium salts are formed.[For example, with sulfuric acid, H2SO4, beryllium sulfate is formed: Be(OH)2
- 17. Beryllium sulphide Beryllium sulphide is a chemical compound with the formula BeS. It is a white
- 18. Beryllium sulphide reacts with hot solutions of alkali and alkali metal carbonates: BeS+4NaOH →Na2 [Be(OH) 4]+Na2S
- 19. Application in roentgen technology in nuclear power as a retarder of netrons in laser technology for
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