Xenon

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Xenon
54Xe
Kr

Xe

Rn
iodinexenoncaesium
Appearance
colorless gas, exhibiting a blue glow when placed in a high voltage electric field


Spectral lines of xenon
General properties
Name, simbolo, kaiphan xenon, Xe, 54
Pronunciation Plantilya:IPAc-en Plantilya:Respell[1]
or Plantilya:IPAc-en Plantilya:Respell[2]
Element category gas nga halangdon
Group, period, block 185, p
Standard atomic weight 131.293(6)
Electron configuration [Kr] 5s2 4d10 5p6
2, 8, 18, 18, 8
Electron shells of xenon (2, 8, 18, 18, 8)
History
Discovery William Ramsay and Morris Travers (1898)
First isolation William Ramsay and Morris Travers (1898)
Physical properties
Phase gas
Density (0 °C, 101.325 kPa)
5.894 g/L
Liquid density at b.p. 3.057[3] g·cm−3
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
Triple point 161.405 K (-112°C), 81.6[4] 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
Molar heat capacity 5R/2 = 20.786 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 83 92 103 117 137 165
Atomic properties
Oxidation states 0, +1, +2, +4, +6, +8
(rarely more than 0)
(weakly acidic oxide)
Electronegativity 2.6 (Pauling scale)
Ionization energies 1st: 1170.4 kJ·mol−1
2nd: 2046.4 kJ·mol−1
3rd: 3099.4 kJ·mol−1
Covalent radius 140±9 pm
Van der Waals radius 216 pm
Miscellanea
Crystal structure face-centered cubic
Xenon has a face-centered cubic crystal structure
Magnetic ordering diamagnetic[5]
Thermal conductivity 5.65×10-3  W·m−1·K−1
Speed of sound (liquid) 1090 m/s; (gas) 169 m·s−1
CAS registry number 7440-63-3
Most stable isotopes
Main article: Isotopes of xenon
iso NA half-life DM DE (MeV) DP
124Xe 0.095% >4.8×1016 y β+β+ 0.825 124Te
125Xe syn 16.9 h ε 1.652 125I
126Xe 0.089% 126Xe is stable with 72 neutrons
127Xe syn 36.345 d ε 0.662 127I
128Xe 1.91% 128Xe is stable with 74 neutrons
129Xe 26.4% 129Xe is stable with 75 neutrons
130Xe 4.07% 130Xe is stable with 76 neutrons
131Xe 21.2% 131Xe is stable with 77 neutrons
132Xe 26.9% 132Xe is stable with 78 neutrons
133Xe syn 5.247 d β 0.427 133Cs
134Xe 10.4% >1.1×1016 y ββ 2.864 134Ba
135Xe syn 9.14 h β 1.16 135Cs
136Xe 8.86% 2.11×1021 y[6] ββ 2.45783[7] 136Ba
t  h  u
· r

Ang xenon mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Xe ug kaiphan nga atomik 54. Ang xenon mao ang gas nga halangdon.

Ang mga gi basihan niini[usba | edit source]

  1. Plantilya:Cite dictionary
  2. Xenon. Dictionary.com Unabridged (2010). Retrieved on 2010-05-06.
  3. Krypton. Gas Encyclopedia. Air Liquide (2009).
  4. Section 4 "Properties of the Elements and Inorganic Compounds; Melting, boiling, triple, and critical temperatures of the elements" in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. 
  5. Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5. 
  6. Ackerman, N.; et.al (2011). "Observation of Two-Neutrino Double-Beta Decay in 136Xe with the EXO-200 Detector". Physical Review Letters 107 (21): 212501. doi:10.1103/PhysRevLett.107.212501. Bibcode2011PhRvL.107u2501A. 
  7. . doi:10.1103/PhysRevLett.98.053003. 


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