# ଆର୍ଗନ

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 |
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 | Ne ↑ **Ar** ↓ Kr |
| chlorine ← **argon** → potassium |

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| ପରମାଣୁ କ୍ରମାଙ୍କ (*Z*) | 18 |
| ଶ୍ରେଣୀ, ବ୍ଳକ | group 18 (noble gases), p-block  |
| ପର୍ଯ୍ୟାୟ | period 3  |
| ମୌଳିକ ପ୍ରକାର |   noble gas |
| ମାନକ ପରମାଣବିକ ଓଜନ (±) (*A*r) | 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  |
| 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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**ଆର୍ଗନ** (English: Argon) ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Ar ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୧୮ । ଏହା ଏକ ନିଷ୍କ୍ରିୟ ଗ୍ୟାସ ଓ ପର୍ଯ୍ୟାୟ ସାରଣୀର ୧୮ତମ ସ୍ତମ୍ବରେ ଅବସ୍ଥିତ ।

## ଧର୍ମ

## ଇତିହାସ

## ଅବସ୍ଥିତି

## ସମସ୍ଥାନିକ

## ଯୌଗିକ

## ଉତ୍ପାଦନ

### ଶିଳ୍ପ କ୍ଷେତ୍ରରେ

### ତେଜସ୍କ୍ରିୟ କ୍ଷୟ ସମୟରେ

## ବ୍ୟବହାର

## ସୁରକ୍ଷା

## ଟୀକା

## ଆଧାର

## ଆହୁରି ପଢନ୍ତୁ

* Emsley, J., Nature's Building Blocks; Oxford University Press: Oxford, NY, 2001; pp. 35–39.
* Brown, T. L.; Bursten, B. E.; LeMay, H. E., In *Chemistry: The Central Science*, 10th ed.; Challice, J.; .; Folchetti, N. et al.; Eds.; Pearson Education, Inc.: Upper Saddle River, NJ, 2006; pp. 276 and 289.
* Triple point temperature: 83.8058 K – Preston-Thomas, H. (1990). "The International Temperature Scale of 1990 (ITS-90)". *Metrologia*. **27**: 3–10. Bibcode:1990Metro..27....3P. doi:10.1088/0026-1394/27/1/002.
* Triple point pressure: 69 kPa – "Section 4, Properties of the Elements and Inorganic Compounds; Melting, boiling, triple, and critical temperatures of the elements". *CRC Handbook of Chemistry and Physics* (85th ed.). Boca Raton, Florida: CRC Press. 2005.

## ବାହାର ଲିଙ୍କ

* Silicon at *The Periodic Table of Videos* (University of Nottingham)
* USGS Periodic Table – Argon Archived 2006-09-23 at the Wayback Machine.
* Diving applications: Why Argon? Archived 2008-07-01 at the Wayback Machine.