# Pérak

Pérak, 47Ag|  |
| Pérak perak· |
| Cingakan | logam putih nyalang |
| Bobot atom standar *A*r, std(Ag) | 7002107868200000000♠107.8682(2) |
| Pérak ring tabél périodik |
|

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

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

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

 | Cu ↑ **Ag** ↓ Au |
| palladium ← **pérak** → kadmium |

 |

 |
| Wilangan atom (*Z*) | 47 |
| Watek | golongan 11 |
| Période | période 5 |
| Blok |   blok-d  |
| Konpigurasi éléktron | [Kr] 4d10 5s1 |
| Éléktron per kulit | 2, 8, 18, 18, 1 |
| Cecirén pisik |
| Pase ring STP | padet |
| Titik lebur | 1234.93 K ​(961.78 °C, ​1763.2 °F)  |
| Titik didih | 2435 K ​(2162 °C, ​3924 °F)  |
| Kapadetan (nampek s.r.) | 10.49 g/cm3 |
| ri kala éncéh (ring t.l.) | 9.320 g/cm3  |
| Panes fusi | 11.28 kJ/mol  |
| Panes panguapan | 254 kJ/mol  |
| Kapasitas panes molar | 25.350 J/(mol·K)  |
| Tekanan uap

| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
| --- | --- | --- | --- | --- | --- | --- |
| at T (K) | 1283 | 1413 | 1575 | 1782 | 2055 | 2433 |

 |
| Cecirén atom |
| Paindikan oksidasi | −2, −1, **+1**, +2, +3 (oksida ampotér) |
| Kaéléktronégatipan | skala Pauling: 1.93  |
| Wasa ionisasi | * ka-1: 731.0 kJ/mol
* ka-2: 2070 kJ/mol
* ka-3: 3361 kJ/mol
*
 |
| Jeriji atom | émpiris: 144 pm  |
| Jeriji kovalén | 145±5 pm  |
| Jeriji Van der Waals | 172 pm  |
| **Garis spéktral saking pérak** |
| Cecirén liyanan |
| Rupa alami | primordial |
| Struktur kristal |  ​kubus mapusat muka (fcc) |
| Kagelisan swara pales tipis | 2680 m/s (ring r.t.)  |
| Ékspansi térmal | 18.9 µm/(m⋅K) (ring 25 °C)  |
| Konduktivitas térmal | 429 W/(m⋅K)  |
| Difusivitas termal | 174 mm2/s (at 300 K)  |
| Resistivitas listrik | 15.87 nΩ⋅m (ring 20 °C)  |
| bacakan magnétik | diamagnétik  |
| Karentanan magnétik molar | 3004805000000000000♠−19.5×10−6 cm3/mol (296 K) |
| Modulus Young | 83 GPa  |
| Modulus Shear | 30 GPa  |
| Modulus Bulk | 100 GPa  |
| Rasio Poisson | 0.37  |
| Kakatosan Mohs | 2.5  |
| Kakatosan Vickers | 251 MPa  |
| Kakatosan Brinell | 206–250 MPa  |
| Nomor CAS | 7440-22-4  |
| Lelintihan |
| Panemuan | sadurung 5000 BC |
| Isotop utama pérak |
|

| Iso­top | Kalimpahan | Paruh-idup (*t*1/2) | Mode paluruhan | Pro­duk |
| --- | --- | --- | --- | --- |
| 105Ag | syn | 41.2 d | ε | 105Pd |
| γ | – |
| 106mAg | syn | 8.28 d | ε | 106Pd |
| γ | – |
| 107Ag | 51.839% | tegteg |
| 108mAg | syn | 418 y | ε | 108Pd |
| IT | 108Ag |
| γ | – |
| 109Ag | 48.161% | tegteg |
| 110mAg | syn | 249.95 d | β− | 110Cd |
| γ | – |
| 111Ag | syn | 7.45 d | β− | 111Cd |
| γ | – |

 |
|

**Pérak** silih tunggil datu kimia antuk simbol **Ag** (saking Basa Latin *argentum*, maasal saking Proto-Indo-European *h₂erǵ*: "nyalang" utawi "petak") miwah wilangan atom 47.

## Pustaka