About Xenon 急!!!!!!!!!!!!!!!!

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