د ويکيپېډيا، وړیا پوهنغونډ له خوا
Silver, 47Ag |
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| Pronunciation | /ˈsɪlvər/ SIL-vər |
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| Appearance | lustrous white metal |
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| اټومي شمیره (Z) | 47 |
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| گروپ, پیریود | group 11, period 5 |
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| بلاک | d-block |
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| Element category | transition metal |
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| معياري اټومي وزن (Ar) | کينډۍ:Val[۱] |
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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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| حالت (at STP) | جامد |
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| دويلې کيدو ټکى | 1234.93 K (961.78 °C, 1763.2 °F) |
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| يشنا ټکی | 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 vaporisation | 254 kJ/mol |
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| Molar heat capacity | 25.350 J/(mol·K) |
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Vapour pressure
| P (Pa)
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1
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10
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100
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1 k
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10 k
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100 k
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| at T (K)
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1283
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1413
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1575
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1782
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2055
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2433
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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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| Ionisation 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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| Crystal structure | face-centred cubic (fcc) Face-centered cubic crystal structure for silver |
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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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| د تودوخې تېرېدنه | 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[۲] |
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| Magnetic susceptibility (χmol) | −19.5·10−6 cm3/mol (296 K)[۳] |
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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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| Discovery | before 5000 BC |
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| | references | in Wikidata |
سپينزر (په انگرېزي: Silver) له کیمیاوي عناصرو څخه یو دی چې په تناوبي جدول کې د Ag سمبول او ۴v اتمي شمېرې په وسیله ښودل شوی دی.
- ↑ Meija, J.; Coplen, T. B. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure Appl. Chem. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- ↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.
- ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
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دا ليکنه نابشپړه ده، تاسې ددې ليکنې په بشپړولو کې د ويکيپېډيا سره مرسته کولای شئ.
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