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| عمومي خواص |
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| Pronunciation | /ˈplætɪnəm/
PLAT-IN-ǝm |
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| Appearance | silvery white |
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| Platinum پهدوراني جدول کې |
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| اټومي شمیره(Z) | 78 |
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| گروپ,پیریود | group 10,period 6 |
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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 | [Xe] 4f14 5d9 6s1 |
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Electrons per shell | 2, 8, 18, 32, 17, 1 |
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| فزیکي خواص |
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| حالت(at STP) | جامد |
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| دويلې کيدو ټکى | 2041.4 K (1768.3 °C, 3214.9 °F) |
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| يشنا ټکی | 4098 K (3825 °C, 6917 °F) |
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| Density near r.t. | 21.45 g/cm3 |
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| when liquid, at m.p. | 19.77 g/cm3 |
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| Heat of fusion | 22.17 kJ/mol |
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| Heat of vaporization | 510 kJ/mol |
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| Molar heat capacity | 25.86 J/(mol·K) |
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Vapor pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 2330 | (2550) | 2815 | 3143 | 3556 | 4094 |
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| اټومي خواص |
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| Oxidation states | 6, 5,4, 3,2, 1, −1, −2, −3 (a mildlybasic oxide) |
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| Electronegativity | Pauling scale: 2.28 |
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| Ionization energies | - 1st: 870 kJ/mol
- 2nd: 1791 kJ/mol
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| Atomic radius | empirical: 139 pm |
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| Covalent radius | 136±5 pm |
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| Van der Waals radius | 175 pm |
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| Miscellanea |
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| Crystal structure | face-centered cubic (fcc) Face-centered cubic crystal structure for platinum |
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| Speed of sound thin rod | 2800 m/s (at r.t.) |
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| Thermal expansion | 8.8 µm/(m·K) (at 25 °C) |
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| د تودوخې تېرېدنه | 71.6 W/(m·K) |
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| Electrical resistivity | 105 nΩ·m (at 20 °C) |
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| Magnetic ordering | paramagnetic |
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| Magnetic susceptibility(χmol) | +201.9·10−6 cm3/mol (290 K)[۲] |
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| Tensile strength | 125–240 MPa |
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| Young's modulus | 168 GPa |
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| Shear modulus | 61 GPa |
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| Bulk modulus | 230 GPa |
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| Poisson ratio | 0.38 |
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| Mohs hardness | 3.5 |
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| Vickers hardness | 400–550 MPa |
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| Brinell hardness | 300–500 MPa |
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| CAS Number | 7440-06-4 |
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| History |
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| Discovery | Antonio de Ulloa (1748) |
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| Mainisotopes of platinum |
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| | references | in Wikidata |
