# Ngiùn[phiên-siá | kói ngièn-sṳ́-mâ]

Ngiùn,  47Ag| ngoi-kôn |
| --- |
|
lustrous white metal  Electrolytically refined silver |
| Kî-pún sin-sit |
| Miàng, fù-ho |
Ngiùn, Ag |
| Yîn-ngî |
silver |
| ngoi-hìn |
lustrous white metal |
| Ngiùn chhai chû-khì-péu ke vi-chi |
|

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 | Cu ↑ **Ag** ↓ Au |
| palladium ← **Ngiùn** → cadmium |

 |

 |
| ngièn-chṳ́ sì-sú |
47 |
| ngièn-chṳ́-liòng (±) |
107.8682(2)  |
| ngièn-su lui-phe̍t |   ko-thu kîm-su̍k |
| Chhu̍k, fûn-khî | 11 chhu̍k, d-block  |
| chû-khì |
period 5  |
| thien-chṳ́ phài-lie̍t | [Kr] 4d10 5s1  |
| per shell |
2, 8, 18, 18, 1 |
| vu̍t-lî sin-chṳt |
| Siông |
ku-thí |
| yùng-tiám |
1234.93 K ​(961.78 °C, ​1763.2 °F)  |
| pui-tiám |
2435 K ​(2162 °C, ​3924 °F)  |
| Me̍t-thu near Sit-vûn |
10.49 g·cm−3 |
|
9.320 g·cm−3  |
| Yùng-fa-ngie̍t |
11.28 kJ·mol−1  |
| Chîn-fat-ngie̍t |
254 kJ·mol−1  |
| Ngie̍t-yùng-liong |
25.350 J·mol−1·K−1  |
| **chîn-hi-ap**

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

 |
| Ngièn-chṳ́ sin-chṳt |
| Yông-fa-su | −2, −1, **1**, 2, 3, 4 ​(an amphoteric oxide) |
| Thien-fu-sin |
Pauling scale: 1.93  |
| Thien-lì-nèn |
1st: 731.0 kJ·mol−1  2nd: 2070 kJ·mol−1  3rd: 3361 kJ·mol−1   |
| Ngièn-chṳ́ pan-kang |
empirical: 144 pm  |
| Khiung-ka pan-kang |
145±5 pm  |
| Van der Waals pan-kang |
172 pm  |
| Miscellanea |
| Chîn-thí keu-chho |  ​face-centered cubic (fcc) |
| Sâng-suk thin rod |
2680 m·s−1 (at r.t.)  |
| Ngie̍t-phàng-chong |
18.9 µm·m−1·K−1 (at 25 °C)  |
| Ngie̍t-chhòn-thô-li̍t |
429 W·m−1·K−1  |
| Ngie̍t-khok-san-li̍t |
174 mm2·s−1 (at 300 K)  |
| Thien-chú-li̍t |
15.87 nΩ·m (at 20 °C)  |
| Chhṳ̀-sin |
diamagnetic  |
| Young's modulus |
83 GPa  |
| Shear modulus |
30 GPa  |
| Bulk modulus |
100 GPa  |
| Poisson ratio |
0.37  |
| Mohs hardness |
2.5  |
| Vickers hardness |
251 MPa  |
| Brinell hardness |
206–250 MPa  |
| CAS Registry Number |
7440-22-4  |
| Le̍k-sú |
| Fat-hien | before 5000 BC |
| Chui vún-thin ke thùng-vi-su |
|
Chú vùn-chông: Ngiùn ke thùng-vi-su |
|

| iso | NA | half-life | DM | DE (MeV) | DP |
| --- | --- | --- | --- | --- | --- |
| 105Ag | syn | 41.2 d | ε | – | 105Pd |
| γ | 0.344, 0.280, 0.644, 0.443 | – |
| 106mAg | syn | 8.28 d | ε | – | 106Pd |
| γ | 0.511, 0.717, 1.045, 0.450 | – |
| 107Ag | 51.839% | – | (SF) | <20.512 |  |
| 108mAg | syn | 418 y | ε | 108Pd |
| IT | 108Ag |
| γ | – |
| 109Ag | 48.161% | – | (SF) | <19.241 |  |
| 111Ag | syn | 7.45 d | β− | 1.036, 0.694 | 111Cd |
| γ | 0.342 | – |

 |
|
Decay modes in parentheses are predicted, but have not yet been observed |

**Ngiùn** (銀) he yit-chúng fa-ho̍k ngièn-su, fa-ho̍k fù-ho vì **Ag**, ngièn-chṳ́ su-muk he **47**. Ngiùn he ko-thu kîm-su̍k, tshòn-thô sin-nèn fî-sòng hau. Tshṳ-yèn ko yû-sṳ̀ vun-tó kí-ke sùn kîm-su̍k. Nè-thu kîm-su̍k khó-yî tso-sṳ̀n ngiùn-è lâu tsû-pó tén-tén yung-tshu.

## Chhâm-kháu chṳ̂-liau