Àdàkọ:Infobox árgọ̀nù

Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
Lọ sí: atọ́ka, àwárí
Árgọ̀nù
18Ar
Ne

Ar

Kr
klorínìárgọ̀nùpotassium
Ìhànsójú
colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field
Vial containing a violet glowing gas

Spectral lines of argon
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà árgọ̀nù, Ar, 18
Ìpèlóhùn /ˈɑrɡɒn/
Ẹ̀ka ẹ́límẹ̀nti noble gases
Ẹgbẹ́, àsìkò, àdìpò 183, p
Ìwúwo átọ́mù 39.948(1)
Ìtòléra ẹ̀lẹ́ktrónì [Ne] 3s2 3p6
2, 8, 8
Electron shells of argon (2, 8, 8)
Ìtàn
Ìwárí Lord Rayleigh and William Ramsay (1894)
Ìyàsọ́tọ̀ àkọ́kọ́ Lord Rayleigh and William Ramsay (1894)
Physical properties
Phase gas
Density (0 °C, 101.325 kPa)
1.784 g/L
Liquid density at b.p. 1.40 g·cm−3
Melting point 83.80 K, −189.35 °C, −308.83 °F
Boiling point 87.30 K, −185.85 °C, −302.53 °F
Triple point 83.8058 K (-189°C), 69 kPa
Critical point 150.87 K, 4.898 MPa
Heat of fusion 1.18 kJ·mol−1
Heat of vaporization 6.43 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)   47 53 61 71 87
Atomic properties
Oxidation states 0
Electronegativity no data (Pauling scale)
Ionization energies
(more)
1st: 1520.6 kJ·mol−1
2nd: 2665.8 kJ·mol−1
3rd: 3931 kJ·mol−1
Covalent radius 106±10 pm
Van der Waals radius 188 pm
Miscellanea
Crystal structure face-centered cubic
Árgọ̀nù has a face-centered cubic crystal structure
Magnetic ordering diamagnetic[1]
Thermal conductivity 17.72x10-3  W·m−1·K−1
Speed of sound (gas, 27 °C) 323 m·s−1
CAS registry number 7440–37–1
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù árgọ̀nù
iso NA half-life DM DE (MeV) DP
36Ar 0.337% 36Ar is stable with 18 neutrons
37Ar syn 35 d ε 0.813 37Cl
38Ar 0.063% 38Ar is stable with 20 neutrons
39Ar trace 269 y β 0.565 39K
40Ar 99.600% 40Ar is stable with 22 neutrons
41Ar syn 109.34 min β 2.49 41K
42Ar syn 32.9 y β 0.600 42K
· r

References

  1. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.