Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
| Fàdákà |
|
47Ag
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| Ìhànsójú |
lustrous white metal
Electrolytically refined silver |
| Àwọn ìdámọ́ wíwọ́pọ̀ |
| Orúkọ, àmì-ìdámọ́, nọ́mbà |
fàdákà, Ag, 47 |
| Ẹ̀ka ẹ́límẹ̀nti |
transition metal |
| Ẹgbẹ́, àsìkò, àdìpò |
11, 5, d |
| Ìwúwo átọ́mù |
107.8682 |
| Ìtòléra ẹ̀lẹ́ktrónì |
[Kr] 4d10 5s1
2, 8, 18, 18, 1 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
10.49 g·cm−3 |
| Liquid density at m.p. |
9.320 g·cm−3 |
| Melting point |
1234.93 K, 961.78 °C, 1763.2 °F |
| Boiling point |
2435 K, 2162 °C, 3924 °F |
| Heat of fusion |
11.28 kJ·mol−1 |
| Heat of vaporization |
250.58 kJ·mol−1 |
| Molar heat capacity |
25.350 J·mol−1·K−1 |
| Vapor pressure |
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
1283 |
1413 |
1575 |
1782 |
2055 |
2433 |
|
| Atomic properties |
| Oxidation states |
1, 2, 3 (amphoteric oxide) |
| Electronegativity |
1.93 (Pauling scale) |
| Ionization energies |
1st: 731.0 kJ·mol−1 |
| 2nd: 2070 kJ·mol−1 |
| 3rd: 3361 kJ·mol−1 |
| Atomic radius |
144 pm |
| Covalent radius |
145±5 pm |
| Van der Waals radius |
172 pm |
| Miscellanea |
| Crystal structure |
face-centered cubic
|
| Magnetic ordering |
diamagnetic |
| Electrical resistivity |
(20 °C) 15.87 nΩ·m |
| Thermal conductivity |
429 W·m−1·K−1 |
| Thermal diffusivity |
(300 K) 174 mm²/s |
| Thermal expansion |
(25 °C) 18.9 µm·m−1·K−1 |
| 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 |
24.5 MPa |
| CAS registry number |
7440-22-4 |
| Àwọn ísótòpù dídúró jùlọ |
| Main article: Àwọn ísótòpù fàdákà |
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· r |
Fàdákà je apilese kemika onide to ni ami-idamo kemika Ag (Látìnì: argentum) ati nomba atomu 47.
