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Lutetium |
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Pípè | /ljuːˈtiːʃiəm/ (lew-TEE-shee-əm) |
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Ìhànsójú | silvery white |
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Ìwúwo átọ̀mù Ar, std(Lu) | 174.9668(1)[1] |
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Lutetium ní orí tábìlì àyè |
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Nọ́mbà átọ̀mù (Z) | 71 |
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Ẹgbẹ́ | group n/a |
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Àyè | àyè 6 |
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Àdìpọ̀ | Àdìpọ̀-d |
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Ẹ̀ka ẹ́límẹ́ntì | Lanthanide |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Xe] 4f14 5d1 6s2 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 32, 9, 2 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 1925 K (1652 °C, 3006 °F) |
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Ígbà ìhó | 3675 K (3402 °C, 6156 °F) |
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Kíki (near r.t.) | 9.841 g/cm3 |
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when liquid (at m.p.) | 9.3 g/cm3 |
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Heat of fusion | ca. 22 kJ/mol |
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Heat of | 414 kJ/mol |
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Molar heat capacity | 26.86 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)
|
1906
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2103
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2346
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(2653)
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(3072)
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(3663)
|
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Atomic properties |
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Oxidation states | 0,[2] +1, +2, +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 1.27 |
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Atomic radius | empirical: 174 pm |
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Covalent radius | 17±8 pm |
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Spectral lines of lutetium |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | hexagonal |
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Thermal expansion | (r.t.) (poly) 9.9 µm/(m·K) |
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Thermal conductivity | 16.4 W/(m·K) |
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Electrical resistivity | (r.t.) (poly) 582 n Ω·m |
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Magnetic ordering | paramagnetic[3] |
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Young's modulus | 68.6 GPa |
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Shear modulus | 27.2 GPa |
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Bulk modulus | 47.6 GPa |
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Poisson ratio | 0.261 |
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Vickers hardness | 1160 MPa |
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Brinell hardness | 893 MPa |
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CAS Number | 7439-94-3 |
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Main isotopes of lutetium |
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Àdàkọ:Category-inline | references |