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Rhenium |
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Pípè | /ˈriːniəm/ (REE-nee-əm) |
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Ìhànsójú | grayish white |
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Ìwúwo átọ̀mù Ar, std(Re) | 186.207(1)[1] |
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Rhenium ní orí tábìlì àyè |
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Nọ́mbà átọ̀mù (Z) | 75 |
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Ẹgbẹ́ | group 7 |
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Àyè | àyè 6 |
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Àdìpọ̀ | Àdìpọ̀-d |
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Ẹ̀ka ẹ́límẹ́ntì | Transition metal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Xe] 4f14 5d5 6s2 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 32, 13, 2 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 3459 K (3186 °C, 5767 °F) |
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Ígbà ìhó | 5869 K (5596 °C, 10105 °F) |
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Kíki (near r.t.) | 21.02 g/cm3 |
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when liquid (at m.p.) | 18.9 g/cm3 |
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Heat of fusion | 60.43 kJ/mol |
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Heat of | 704 kJ/mol |
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Molar heat capacity | 25.48 J/(mol·K) |
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pressure
P (Pa)
|
1
|
10
|
100
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1 k
|
10 k
|
100 k
|
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at T (K)
|
3303
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3614
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4009
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4500
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5127
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5954
|
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Atomic properties |
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Oxidation states | −3, −1, 0, +1, +2, +3, +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 1.9 |
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energies | |
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Atomic radius | empirical: 137 pm |
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Covalent radius | 151±7 pm |
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Spectral lines of rhenium |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | hexagonal |
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Speed of sound thin rod | 4700 m/s (at 20 °C) |
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Thermal expansion | 6.2 µm/(m·K) |
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Thermal conductivity | 48.0 W/(m·K) |
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Electrical resistivity | 193 n Ω·m (at 20 °C) |
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Magnetic ordering | paramagnetic[2] |
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Young's modulus | 463 GPa |
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Shear modulus | 178 GPa |
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Bulk modulus | 370 GPa |
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Poisson ratio | 0.30 |
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Mohs hardness | 7.0 |
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Vickers hardness | 2450 MPa |
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Brinell hardness | 1320 MPa |
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CAS Number | 7440-15-5 |
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Main isotopes of rhenium |
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Àdàkọ:Category-inline | references |