標題:
About Xenon 急!!!!!!!!!!!!!!!!
發問:
Xenon1) Atomic Mass2) No. of protons,neutrons and electrons3) Electron diagram and configuration4)physical state at room temp.5)potential hazards6)uses of the elements. A minimum of two uses is required7)interesting facts, common compounds etc. A minimum of three is... 顯示更多 Xenon 1) Atomic Mass 2) No. of protons,neutrons and electrons 3) Electron diagram and configuration 4)physical state at room temp. 5)potential hazards 6)uses of the elements. A minimum of two uses is required 7)interesting facts, common compounds etc. A minimum of three is required. THX!!!!!!!!!!!!!!!!!!!!!!!!!!!!
最佳解答:
1) Atomic Mass - atomic number 54 2) No. of protons,neutrons and electrons - Protons: 54 - Electrons: 54 - Neutrons: 77 3) Electron diagram and configuration -Electron configuration [Kr] 4d10 5s2 5p6 -Electron diagram: http://en.wikipedia.org/wiki/Xenon#Characteristics 4)physical state at room temp. - colorless, heavy, odorless gas 5)Potential hazards - Extreme cold which can freeze human tissue and em brittle materials such as carbon steel, plastics, and rubber. - Extreme pressure which can result in a violent explosion due to vaporization of xenon liquid resulting from heat leaking into the containment system. - Asphyxiation due to displacement of air by escaping liquid and the resultant expanding gas in the case of inert gases . (It expands on the order of 700-800 times their liquid volume when released to the atmosphere at room temperature). http://www.ab.ust.hk/sepo/sftywise/199212/page3.htm 6)uses of the elements. A minimum of two uses is required - Gas-discharge lamps - Lasers - Anesthesia - Medical imaging - In nuclear energy applications, xenon is used in bubble chambers,probes, and in other areas where a high molecular weight and inert nature is desirable. - (Liquid state) detecting hypothetical weakly interacting massive particles, or WIMPs. - the preferred fuel for ion propulsion of spacecraft - the perxenate compounds are used as oxidizing agents in analytical chemistry http://en.wikipedia.org/wiki/Xenon#Applications 2008-03-24 13:09:23 補充： 7)Interesting Facts: - It is the heaviest of the noble gasses with a density of over 5 times the density of oxygen. - Xenon comes from the Latin word "xenos" that means "strange one" - Noble gasses were believed to be unreactive with other elements. In 1962, Neil Bartlett, found 2008-03-24 13:11:22 補充： Interesting Facts: - Xenon and the other noble gasses, give off a large glowing light when excited by electric charges. Xenon is known to glow blue or give off a radiant white light if excited by electric currents. 2008-03-24 13:12:12 補充： Interesting facts: - Even though Xenon is a noble and stable gas, it's compound, xenon trioxide is highly explosive. 2008-03-24 13:12:33 補充： Compounds: - Xenon hexafluoroplatinate was the first chemical compound of xenon, synthesized in 1962 -xenon difluoride (XeF2) -A highly explosive compound, xenon trioxide (XeO3), has also been made More about these compound: http://en.wikipedia.org/wiki/Xenon#Compounds 2008-03-24 13:14:19 補充： Other information: Physical properties : Phase: gas Density: (0 °C, 101.325 kPa) 5.894 g/L Melting point: (101.325 kPa) 161.4 K (?111.7 °C, ?169.1 °F) Boiling point: (101.325 kPa) 165.03 K (?108.12 °C, ?162.62 °F) 2008-03-24 13:14:36 補充： Other information: Triple point: 161.405 K (-112°C), 81.6[1] kPa Critical point: 289.77 K, 5.841 MPa Heat of fusion: (101.325 kPa) 2.27 kJ·mol?1 Heat of vaporization: (101.325 kPa) 12.64 kJ·mol?1 Heat capacity: (100 kPa, 25 °C) 20.786 J·mol?1·K?1
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