ଛାଞ୍ଚ:Infobox argon

Argon,  ₁₈Ar

Spectral lines of argon
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	argon, Ar
Appearance	colorless gas exhibiting a lilac/violet glow when placed in a high voltage electric field
ଉଚ୍ଚାରଣ	/ˈɑːrɡɒn/
Argon in the periodic table
Ne ↑ Ar ↓ Kr chlorine ← argon → potassium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	18
ଶ୍ରେଣୀ, ବ୍ଳକ	group 18 (noble gases), p-block
ପର୍ଯ୍ୟାୟ	period 3
ମୌଳିକ ପ୍ରକାର	noble gas
ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar)	39.948(1)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Ne] 3s2 3p6
per shell	2, 8, 8
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	gas
ଗଳନାଙ୍କ	83.80 K ​(−189.35 °C, ​−308.83 °F)
ସ୍ଫୁଟନାଙ୍କ	87.30 K ​(−185.85 °C, ​−302.53 °F)
ଘନତା at stp (0 °C and 101.325 kPa)	1.784 g/L
when liquid, at b.p.	1.40 g/cm3
Triple point	83.8058 K, ​69 kPa
Critical point	150.87 K, 4.898 MPa
Heat of fusion	1.18 kJ/mol
Heat of	6.43 kJ/mol
Molar heat capacity	5R/2 = 20.786 J/(mol·K)
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	Pauling scale: no data
energies	(more)
Covalent radius	106±10 pm
Van der Waals radius	188 pm
Miscellanea
Crystal structure	​face-centered cubic (fcc)
Speed of sound	(gas, 27 °C) 323 m/s
Thermal conductivity	17.72x10-3  W/(m·K)
Magnetic ordering	diamagnetic[1]
CAS Number	7440–37–1
ଇତିହାସ
ଆବିଷ୍କାର	Lord Rayleigh and William Ramsay (1894)
First isolation	Lord Rayleigh and William Ramsay (1894)
Most stable isotopes of argon
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
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References

These references will appear in the article, but this list appears only on this page.

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