# Argon

Argon, 18Ar|  |
| Argon ᵒaŕgon· |
| Pabaosan | /ˈɑːrɡɒn/ ​(*AR-gon*) |
| Cingakan | gas tan mawarna, masunar tangi rikala kagenahang ring médan listrik |
| Bobot atom standar *A*r, std(Ar) | [7001397920000000000♠39.792, 7001399630000000000♠39.963] konvénsional: 7001399500000000000♠39.95 |
| Argon ring tabél périodik |
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|  |  |  |
| --- | --- | --- |
| Hidrogén |  | Hélium |
| Litium | Bérilium |  | Boron | Karbon | Nitrogén | Oksigén | Fluorin | Néon |
| Natrium | Magnésium |  | Aluminium | Silikon | Phosfor | Urirang | Klorin | Argon |
| Potasium | Kalsium |  | Skandium | Titanium | Vanadium | Kromium | Mangan (datu) | Wesi | Kobalt | Nikel | Temaga | Séng | Gallium | Gérmanium | Arsenik | Sélénium | Brom | Kripton |
| Rubidium | Strontium |  |  | Ittrium | Zirkonium | Niobium | Molibdénum | Téknésium | Ruthénium | Rhodium | Palladium | Pérak | Kadmium | Indium | Timah | Antimoni | Téllurium | Yodium | Xénon |
| Sésium | Barium | Lanthanum | Sérium | Praséodimium | Néodimium | Prométhium | Samarium | Éuropium | Gadolinium | Terbium | Disprosium | Holmium | Érbium | Thulium | Itterbium | Lutésium | Hafnium | Tantalum | Tungstén | Rhénium | Osmium | Iridium | Platinum | Mas | Rasa (datu) | Thallium | Timbal | Bismuth | Polonium | Astatin | Radon |
| Fransium | Radium | Aktinium | Thorium | Protaktinium | Uranium | Néptunium | Plutonium | Amérisium | Curium | Berkélium | Kalifornium | Éinsteinium | Fermium | Méndelevium | Nobélium | Lawrénsium | Rutherfordium | Dubnium | Seaborgium | Bohrium | Hassium | Meitnérium | Darmstadtium | Roéntgénium | Kopernikium | Nihonium | Flérovium | Moskovium | Livermorium | Ténnessin | Oganésson |

 | Né ↑ **Ar** ↓ Kr |
| klorin ← **argon** → potasium |

 |

 |
| Wilangan atom (*Z*) | 18 |
| Watek | golongan 18 (gas mulia) |
| Période | période 3 |
| Blok |   blok-p  |
| Konpigurasi éléktron | [Né] 3s2 3p6 |
| Éléktron per kulit | 2, 8, 8 |
| Cecirén pisik |
| Pase ring STP | gas |
| Titik lebur | 83.81 K ​(−189.34 °C, ​−308.81 °F)  |
| Titik didih | 87.302 K ​(−185.848 °C, ​−302.526 °F)  |
| Kapadetan (ring STP) | 1.784 g/L |
| ri kala éncéh (ring t.d.) | 1.3954 g/cm3  |
| Titik tripel | 83.8058 K, ​68.89 kPa  |
| Titik kritis | 150.687 K, 4.863 MPa  |
| Panes fusi | 1.18 kJ/mol  |
| Panes panguapan | 6.53 kJ/mol  |
| Kapasitas panes molar | 20.85 J/(mol·K)  |
| Tekanan uap

| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| --- | --- | --- | --- | --- | --- | --- |
| at T (K) |   | 47 | 53 | 61 | 71 | 87 |

 |
| Cecirén atom |
| Paindikan oksidasi | **0** |
| Kaéléktronégatipan | skala Pauling: no data  |
| Wasa ionisasi | * ka-1: 1520.6 kJ/mol
* ka-2: 2665.8 kJ/mol
* ka-3: 3931 kJ/mol
* (malih)
 |
| Jeriji kovalén | 106±10 pm  |
| Jeriji Van der Waals | 188 pm  |
| **Garis spéktral saking argon** |
| Cecirén liyanan |
| Rupa alami | primordial |
| Struktur kristal |  ​kubus mapusat muka (fcc) |
| Kagelisan swara | 323 m/s (gas, ring 27 °C) |
| Konduktivitas térmal | 17.72×10-3  W/(m⋅K)  |
| bacakan magnétik | diamagnétik  |
| Karentanan magnétik molar | 3004804000000000000♠−19.6×10−6 cm3/mol |
| Nomor CAS | 7440-37-1  |
| Lelintihan |
| Panemuan miwah isolasi kapertama | Lord Rayleigh miwah William Ramsay (1894) |
| Isotop utama argon |
|

| Iso­top | Kalimpahan | Paruh-idup (*t*1/2) | Mode paluruhan | Pro­duk |
| --- | --- | --- | --- | --- |
| 36Ar | 0.334% | tegteg |
| 37Ar | syn | 35 d | ε | 37Cl |
| 38Ar | 0.063% | tegteg |
| 39Ar | trace | 269 y | β− | 39K |
| 40Ar | 99.604% | tegteg |
| 41Ar | syn | 109.34 min | β− | 41K |
| 42Ar | syn | 32.9 y | β− | 42K |

 |
|

**Argon** silih tunggil datu kimia antuk simbol **Ar** miwah wilangan atom 18. Ipun magenah sajeroning seka 18 saking tabél périodik miwah gas mulia.

## Cutetan

## Pustaka