Microsoft Word - WaterChemistry

281 Cubic boron nitride, among other applications, is used as an abrasive, as it has a hardness comparable with diamond (the two ...

282 It results in solutions enriched in^11 B(OH) 3 and therefore may be responsible for the large (^11) B enrichment in seawater ...

283 In radiation hardened semiconductor designs, one countermeasure is to use depleted boron which is greatly enriched in^11 B a ...

284 However, after 1970s, it was mostly replaced by ion implantation, which relies mostly on BF 3 as a boron source. Boron trich ...

285 under commercial name borazon, is a superior abrasive. Its hardness is only slightly smaller, but chemical stability is supe ...

286 Research Areas Magnesium diboride is an important superconducting material with the transition temperature of 39 K. MgB 2 wi ...

287 Germanium- Metalloid Germanium looks like a metal. It has a bright, shiny, silvery color. But it is brittle and breaks apart ...

288 Germanium "metal" (isolated germanium) is used as semiconductor in transistors and various other electronic devices. Histori ...

289 The physical data from these compounds — which corresponded well with Mendeleev's predictions — made the discovery an import ...

290 Chemistry Germanium is not thought to be essential to the health of plants or animals. Some of its compounds present a hazar ...

291 The germanes are less volatile and less reactive than their corresponding silicon analogues. GeH 4 reacts with alkali metals ...

292 Electronics Silicon-germanium alloys are rapidly becoming an important semiconductor material, for use in high-speed integra ...

293 Polonium- Metalloid Polonium is a chemical element with the symbol Po and atomic number 84, discovered in 1898 by Marie and ...

294 Meanwhile, wearing chemically resistant and "intact" gloves is a mandatory precaution to avoid transcutaneous diffusion of p ...

295 Well-known Poisoning Cases Notably, the murder of Alexander Litvinenko, a Russian dissident, in 2006 was announced as due to ...

296 As early as the 1920s Lacassagne, using polonium provided by his colleague Marie Curie, showed that the element has a very s ...

297 Silicon- Metalloid Silicon is a tetravalent metalloid, is a chemical element with the symbol Si and atomic number 14. It is ...

298 Therefore, it does not contract when it freezes like most substances, but expands, similar to how ice is less dense than wat ...

299 Here, the reduced silicate mineral matrix entrapped the metals reactive enough to be oxidized (aluminum, calcium, sodium, po ...

300 The silicon produced this manner is called metallurgical grade silicon and is at least 98% pure. Using this method, silicon ...