Halogen minerals: Definition from Answers.com
halogen mineral ( ′haləjən ′minrəl ) ( mineralogy ) Any of the naturally
occurring compounds ... What is the pd 4 halogen. pd 5 halogen. pd 5 group IB?
...
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luminous efficiency: Definition from Answers.com
100 W tungsten glass halogen (220 V), 16.7, 2.4%. 200 W tungsten glass halogen (
220 V), 17.6, 2.6%. 500 W tungsten glass halogen (220 V), 19.8, 2.9%. 5 W ...
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bromine: Definition from Answers.com
Nov 17, 2008 ... See also Halogen elements; Periodic table. The most stable valence states of
bromine in its salts are −1 and +5, although +1, +3, ...
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astatine: Definition from Answers.com
Nov 5, 2008 ... Astatine is the heaviest of the halogen groups, filling the place immediately
... density unknown; valence believed to be +1, +3, +5, or +7. ...
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fluorine: Definition from Answers.com
( Symbol F ) A pale-yellow, highly corrosive, poisonous, gaseous halogen ... the
lethal dose of sodium fluoride for a 70 kg human is estimated at 5–10 g. ...
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rhenium: Definition from Answers.com
The halogen compounds of rhenium are very complicated, and a large series of
.... ReCl6, ReCl5, ReCl4 and ReCl3 are a few of the known halogen derivatives.
...
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methane: Definition from Answers.com
Mixtures of 5 – 14% methane in air are explosive and have caused many mine
disasters. .... Methane is violently reactive with oxidizers, halogens, ...
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tantalum: Definition from Answers.com
Tantalum forms halogen compounds in the oxidation states of +5, +4, and +3 of
the type TaX5, TaX4, and TaX3, although multi core complexes and ...
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Carbonate minerals: Definition from Answers.com
Carbonates with hydroxyl or halogen. Carbonate with hydroxide: Monoclinic ... H2
O; Natron Na2CO3·10(H2O); Zellerite Ca(UO2)(CO3)2·5(H2O) ...
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directional signal: Definition from Answers.com
6.1.1 Incandescent light bulbs; 6.1.2 Halogen; 6.1.3 Xenon; 6.1.4 Neon tubes;
6.1.5 Light emitting diodes (LED). 6.2 Variable-intensity signal lamps ...
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