# Argon

|  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- |
|

|  |  |
| --- | --- |
| 18 | klorin ← argon → - |
| Ne ↑ Ar ↓ Kr |

|  |
| --- |
| Tabel périodik |

 |

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| Katrangan Umum Unsur |
| Jeneng, Lambang, Nomer atom | argon, Ar, 18 |
| Dhèrèt kimia | gas mulia |
| Golongan, Période, Blok | 18, 3, p |
| Panampilan | tak berwarna  |
| Massa atom | 39,948(1) g/mol |
| Konfigurasi elektron | [Ne] 3s2 3p6 |
| Cacahing èlèktron saben kulit | 2, 8, 8 |
| Ciri-ciri fisik |
| Fase | gas |
| Massa jenis | (0 °C; 101,325 kPa) 1,784 g/L |
| Titik lebur | 83,80 K (-189,35 °C, -308,83 °F) |
| Titik umob | 87,30 K (-185,85 °C, -302,53 °F) |
| Kalor peleburan | 1,18 kJ/mol |
| Kalor panguapan | 6,43 kJ/mol |
| Kapasitas kalor | (25 °C) 20,786 J/(mol·K) |
|

Tekanan uap| *P*/Pa | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| ing *T*/K |   | 47 | 53 | 61 | 71 | 87 |

 |
| Ciri-ciri atom |
| Struktur kristal | kubus pusat muka |
| Bilangan oksidasi | 0 |
| Elektronegativitas | data tak tersedia (skala Pauling) |
| Energi ionisasi | pertama: 1520,6 kJ/mol |
| ke-2: 2665,8 kJ/mol |
| ke-3: 3931 kJ/mol |
| Jari-jari atom | 71 pm |
| Jari-jari atom (terhitung) | 71 pm |
| Jari-jari kovalen | 97 pm |
| Jari-jari Van der Waals | 188 pm |
| Lain-lain |
| Sifat magnetik | nonmagnetik |
| Konduktivitas termal | (300 K) 17,72 mW/(m·K) |
| Kecepatan suara | (gas, 27 °C) 323 m/s |
| Isotop |
|

| iso | NA | waktu paruh | DM | DE (MeV) | DP |
| --- | --- | --- | --- | --- | --- |
| 36Ar | 0,337% | Ar stabil kanthi 18 neutron |
| 37Ar | syn | 35 hari | ε | ? | 37Cl |
| 38Ar | 0,063% | Ar stabil kanthi 20 neutron |
| 39Ar | syn | 269 taun | β- | 0,565 | 39K |
| 40Ar | 99,600% | Ar stabil kanthi 22 neutron |
| 42Ar | syn | 32,9 taun | β- | 0,600 | 42K |

 |
| Referensi |

*Argon uga minangka jeneng satelit pengintai KH-5.*
**Argon** iku unsur kimia sajeroning tabel périodik kang duwé simbol **Ar** lan nomer atom 18. Gas mulia ke-3, ing période 8, argon mbentuk 1% saka atmosfer bumi.

## Rujukan

* Los Alamos National Laboratory – Argon Archived 2006-09-29 at the Wayback Machine.

## Pranala njaba

* WebElements.com – Argon
* EnvironmentalChemistry.com – Argon
* Panggunaan sajeroning panyileman: Why Argon? Archived 2008-07-01 at the Wayback Machine.

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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| **Golongan** → | **1** | **2** |  | **3** | **4** | **5** | **6** | **7** | **8** | **9** | **10** | **11** | **12** | **13** | **14** | **15** | **16** | **17** | **18** |
| **Période** ↓ |  |
| **1** | 1 H |  | 2 He |
| **2** | 3 Li | 4 Be |  |  | 5 B | 6 C | 7 N | 8 O | 9 F | 10 Ne |
| **3** | 11 Na | 12 Mg |  |  | 13 Al | 14 Si | 15 P | 16 S | 17 Cl | 18 Ar |
| **4** | 19 K | 20 Ca |  | 21 Sc | 22 Ti | 23 V | 24 Cr | 25 Mn | 26 Fe | 27 Co | 28 Ni | 29 Cu | 30 Zn | 31 Ga | 32 Ge | 33 As | 34 Se | 35 Br | 36 Kr |
| **5** | 37 Rb | 38 Sr |  | 39 Y | 40 Zr | 41 Nb | 42 Mo | 43 Tc | 44 Ru | 45 Rh | 46 Pd | 47 Ag | 48 Cd | 49 In | 50 Sn | 51 Sb | 52 Te | 53 I | 54 Xe |
| **6** | 55 Cs | 56 Ba | \*  | 71 Lu | 72 Hf | 73 Ta | 74 W | 75 Re | 76 Os | 77 Ir | 78 Pt | 79 Au | 80 Hg | 81 Tl | 82 Pb | 83 Bi | 84 Po | 85 At | 86 Rn |
| **7** | 87  Fr  | 88 Ra | \*\*  | 103 Lr | 104 Rf | 105 Db | 106 Sg | 107 Bh | 108 Hs | 109 Mt | 110 Ds | 111 Rg | 112 Cn | 113 Nh | 114 Fl | 115 Mc | 116 Lv | 117 Ts | 118 Og |
|  |
| \* **Lantanida** | 57 La | 58 Ce | 59 Pr | 60 Nd | 61 Pm | 62 Sm | 63 Eu | 64 Gd | 65 Tb | 66 Dy | 67 Ho | 68 Er | 69 Tm | 70 Yb |
| \*\* **Aktinida** | 89 Ac | 90 Th | 91 Pa | 92 U | 93 Np | 94 Pu | 95 Am | 96 Cm | 97 Bk | 98 Cf | 99 Es | 100 Fm | 101 Md | 102 No |

Seri Kimia saka Tabel Périodik| Logam alkali | Alkali tanah | Lantanida | Aktinida | Logam transisi |
| Logam | Metaloid | Nonlogam | Halogen | Gas mulia |