Revision as of 20:16, 16 December 2020 by imported>Monkbot
[[Category:Template:Pagetype with short description]]
Silver, 47Ag |
Silver |
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Appearance | lustrous white metal |
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Standard atomic weight Ar, std(Ag) | Template:Val[1] |
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Silver in the periodic table |
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Atomic number (Z) | 47 |
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Group | group 11 |
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Period | period 5 |
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Block | d-block |
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Electron configuration | [Kr] 4d10 5s1 |
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Electrons per shell | 2, 8, 18, 18, 1 |
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Physical properties |
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Phase at STP | solid |
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Melting point | 1234.93 K (961.78 °C, 1763.2 °F) |
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Boiling point | 2435 K (2162 °C, 3924 °F) |
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Density (near r.t.) | 10.49 g/cm3 |
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when liquid (at m.p.) | 9.320 g/cm3 |
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Heat of fusion | 11.28 kJ/mol |
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Heat of vaporization | 254 kJ/mol |
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Molar heat capacity | 25.350 J/(mol·K) |
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Vapor pressure
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
at T (K)
|
1283
|
1413
|
1575
|
1782
|
2055
|
2433
|
|
Atomic properties |
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Oxidation states | −2, −1, +1, +2, +3 (an amphoteric oxide) |
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Electronegativity | Pauling scale: 1.93 |
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Ionization energies | - 1st: 731.0 kJ/mol
- 2nd: 2070 kJ/mol
- 3rd: 3361 kJ/mol
-
|
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Atomic radius | empirical: 144 pm |
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Covalent radius | 145±5 pm |
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Van der Waals radius | 172 pm |
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Spectral lines of silver |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | face-centered cubic (fcc) |
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Speed of sound thin rod | 2680 m/s (at r.t.) |
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Thermal expansion | 18.9 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 429 W/(m·K) |
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Thermal diffusivity | 174 mm2/s (at 300 K) |
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Electrical resistivity | 15.87 nΩ·m (at 20 °C) |
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Magnetic ordering | diamagnetic[2] |
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Magnetic susceptibility | −19.5·10−6 cm3/mol (296 K)[3] |
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Young's modulus | 83 GPa |
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Shear modulus | 30 GPa |
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Bulk modulus | 100 GPa |
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Poisson ratio | 0.37 |
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Mohs hardness | 2.5 |
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Vickers hardness | 251 MPa |
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Brinell hardness | 206–250 MPa |
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CAS Number | 7440-22-4 |
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History |
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Discovery | before 5000 BC |
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Main isotopes of silver |
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Category: Silver | references |
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References
These references will appear in the article, but this list appears only on this page.
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