11. This is a plant where beryllium medical surveillance should occur, 12. Beryllium used in spacecraft and aircraft comes from the ore.13. The 2s electrons of beryllium may contribute to chemical bonding. 14. Beryllium difluoride, BeF 2, is different than the other difluorides.15. The name " beryllium " was first used by W�hler in 1828. 16. Currently most beryllium is produced by reducing beryllium fluoride with purified magnesium. 17. Currently most beryllium is produced by reducing beryllium fluoride with purified magnesium. 18. Magnesium and beryllium are also potential materials for high-performance sails. 19. Electrolysis or heating of these compounds can then produce beryllium . 20. Beryllium becomes concentrated in felsic pegmatites in which chromium is almost absent.
