Argon

Argon, 18Ar
Vial containing a violet glowing gas
Argon
Bigkas /ˈɑːrɡɒn/ ​(AR-gon)
Appearancecolorless gas exhibiting a lilac/violet glow when placed in an electric field
Standard atomic weight Ar°(Ar)
  • [39.792, 39.963]
  • 39.95±0.16 (pinaikli)[1][2]
Argon sa talahanayang peryodiko
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Ne
↑
Ar
↓
Kr
kloro ← argon → potasyum
Atomikong bilang (Z)18
Group18
Period3
Block  p-block
Electron configuration[Ne] 3s2 3p6
Electrons per shell2, 8, 8
Physical properties
Phase at STPgas
Melting point83.81 K ​(−189.34 °C, ​−308.81 °F)
Boiling point87.302 K ​(−185.848 °C, ​−302.526 °F)
Density (at STP)1.784 g/L
when liquid (at b.p.)1.3954 g/cm3
Triple point83.8058 K, ​68.89 kPa[3]
Critical point150.687 K, 4.863 MPa[3]
Heat of fusion1.18 kJ/mol
Heat of vaporization6.53 kJ/mol
Molar heat capacity20.85[4] J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K)   47 53 61 71 87
Atomic properties
Oxidation states0
ElectronegativityPauling scale: no data
Ionization energies
  • 1st: 1520.6 kJ/mol
  • 2nd: 2665.8 kJ/mol
  • 3rd: 3931 kJ/mol
  • (more)
Covalent radius106±10 pm
Van der Waals radius188 pm
Color lines in a spectral range
Mga linyang espektral ng argon
Other properties
Natural occurrenceprimordiyal
Crystal structure ​face-centered cubic (fcc) (cF4)
Lattice constant
Face-centered cubic crystal structure for argon
a = 546.91 pm (at triple point)[5]
Thermal conductivity17.72×10-3  W/(m⋅K)
Magnetic orderingdiamagnetic[6]
Molar magnetic susceptibility−19.6×10−6 cm3/mol[7]
Speed of sound323 m/s (gas, at 27 °C)
CAS Number7440-37-1
History
Discovery and first isolationLord Rayleigh and William Ramsay (1894)
Isotopes of argon
Main isotopes[8] Decay
abun­dance half-life (t1/2) mode pro­duct
36Ar 0.334% stable
37Ar trace 35 d ε 37Cl
38Ar 0.0630% stable
39Ar trace 268 y β− 39K
40Ar 99.6% stable
41Ar trace 109.34 min β− 41K
42Ar synth 32.9 y β− 42K
Kategorya: Argon
| references

Ang argon (Espanyol: argon, Ingles: argon, may sagisag na Ar, atomikong bilang na 18, atomikong timbang na 3.94, punto ng pagkatunaw na 189.4 °C, at punto ng pagkulong 185.9 °C) ay isang gas at elementong hindi kumikilos o hindi gumagalaw, walang amoy, at wala ring kulay. Sa pagtataya, ito ang bumubuo ng 1% ng atmospera ng daigdig. Natuklasan ito nina William Ramsay at John Strutt, Ikatlong Baron Rayleigh noong 1894. Isa itong sangkap sa loob ng mga may kuryenteng ilaw at ginagamit ding sangkap sa mga tubong pangradyo.[9]

Mga sanggunian

  1. ↑ "Standard Atomic Weights: Argon" (sa wikang Ingles). CIAAW. 2017.
  2. ↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (sa wikang Ingles). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
  3. ↑ 3.0 3.1 Haynes, William M., pat. (2011). CRC Handbook of Chemistry and Physics (ika-92nd (na) labas). Boca Raton, FL: CRC Press. p. 4.121. ISBN 1-4398-5511-0.
  4. ↑ Shuen-Chen Hwang, Robert D. Lein, Daniel A. Morgan (2005). "Noble Gases". Kirk Othmer Encyclopedia of Chemical Technology. Wiley. pp. 343–383. doi:10.1002/0471238961.0701190508230114.a01.
  5. ↑ Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
  6. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., pat. (2005). CRC Handbook of Chemistry and Physics (ika-86th (na) labas). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
  7. ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
  8. ↑ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
  9. ↑ Gaboy, Luciano L. Argon - Gabby's Dictionary: Praktikal na Talahuluganang Ingles-Filipino ni Gabby/Gabby's Practical English-Filipino Dictionary, GabbyDictionary.com.

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