GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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23:08 Apr 6, 2006 |
Italian to English translations [PRO] Science - Chemistry; Chem Sci/Eng | |||||||
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| Selected response from: Stefano Asperti Italy Local time: 03:16 | ||||||
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Summary of answers provided | ||||
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4 +5 | halides |
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Discussion entries: 1 | |
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halides Explanation: http://en.wikipedia.org/wiki/Halide A halide is a binary compound, of which one part is a halogen atom and the other part is an element or radical that is less electronegative than the halogen, to make a fluoride, chloride, bromide, iodide, or astatide compound. Many salts are halides. All Group 1 metals form halides with the halogens and they are white solids. Metal halides are used in high-intensity discharge lamps called metal halide lamps, such as those used in modern street lights. These are more energy-efficient than mercury-vapor lamps, and have much better colour rendition than orange high-pressure sodium lamps. Metal halide lamps are also commonly used in greenhouses or in rainy climates to supplement natural sunlight. Alkyl halides are organic compounds of the type R-X, containing an alkyl group R covalently bonded to a halogen X. A halide ion is a halogen atom bearing a negative ion, such as fluoride ion (F-) or chloride ion (Cl-). Such ions are present in all ionic halide salts. Pseudohalides resemble halides in their charge and reactivity; common examples are NNN-, CNO-, CN-, etc. -------------------------------------------------- Note added at 10 mins (2006-04-06 23:18:33 GMT) -------------------------------------------------- NaCl = sodium chloride = cloruro di sodio -------------------------------------------------- Note added at 10 mins (2006-04-06 23:19:05 GMT) -------------------------------------------------- alogenuri metallici = metal halides |
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