ආගන්

Argon, ₀₀Ar
Argon
Appearance	colorless gas exhibiting a lilac/violet glow when placed in an electric field
Standard atomic weight Ar°(Ar)
Argon in the periodic table
	ක්ලෝරීන් ← argon → පොටෑසියම්
Group	group 18 (noble gases)
Period	period 3
Block	p-block
Electron configuration	[Ne] 3s2 3p6
Electrons per shell	2, 8, 8
Physical properties
Phase at STP	gas
Melting point	83.81 K (−189.34 °C, −308.81 °F)
Boiling point	87.302 K (−185.848 °C, −302.526 °F)
Density (at STP)	1.784 g/L
when liquid (at b.p.)	1.3954 g/cm3
Triple point	83.8058 K, 68.89 kPa
Critical point	150.687 K, 4.863 MPa
Heat of fusion	1.18 kJ/mol
Heat of vaporization	6.53 kJ/mol
Molar heat capacity	20.85 J/(mol·K)
Atomic properties
Oxidation states	0
Electronegativity	Pauling scale: no data
Ionization energies	1st: 1520.6 kJ/mol ; 2nd: 2665.8 kJ/mol ; 3rd: 3931 kJ/mol ; (more) ;
Covalent radius	106±10 pm
Van der Waals radius	188 pm
Other properties
Natural occurrence	primordial
Crystal structure	face-centered cubic (fcc)
Thermal conductivity	17.72×10−3 W/(m⋅K)
Magnetic ordering	diamagnetic
Molar magnetic susceptibility	−19.6×10−6 cm3/mol
Speed of sound	323 m/s (gas, at 27 °C)
CAS Number	7440-37-1
History
Discovery and first isolation	Lord Rayleigh and William Ramsay (1894)
Isotopes of argon v • [{{fullurl:Template:{{{template}}}\|action=edit}} e]
	Template:infobox argon isotopes does not exist
	ප්‍රවර්ගය: Argon; නරඹන්න; සාකච්ඡාව; සංස්කරණය; \| references

ආගන් යනු පරමාණුක ක්‍රමාංකය 18 වූ මූලද්‍රව්‍යයයි. එහි රසායනික සංකේතය Ar ය. ආගන් ඒක පරමාණුක වායුවකි. ආවර්තිතා වගුවේ VIII / 0 (8) කාණ්‍ඩයේ සිටී. ආගන් උච්ච වායුවකි. ආගන් හි ඉලෙට්‍රොනික වින්‍යාසය 2,8,8 වේ. ආවර්තය 3 වන අතර කාන්ඩය VIII / 0 වේ. අයනය නොසාදයි. ප්‍රධාන සංයුජතාව 0 වේ.

මූලාශ්‍ර

^ ^a ^b සැකිල්ල:RubberBible92nd
^ 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.
^ 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
^ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

[b92-1] සැකිල්ල:RubberBible92nd

[2] 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.

[3] 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

[4] Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.

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