 |
| Yttrium |
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| Pípè | /ˈɪtriəm/ (IT-ree-əm) |
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| Ìhànsójú | silvery white |
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| Ìwúwo átọ̀mù Ar, std(Y) | 88.90584(1)[1] |
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| Yttrium ní orí tábìlì àyè |
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|
| Nọ́mbà átọ̀mù (Z) | 39 |
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| Ẹgbẹ́ | group 3 |
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| Àyè | àyè 5 |
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| Àdìpọ̀ | Àdìpọ̀-d |
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| Ẹ̀ka ẹ́límẹ́ntì | Transition metal |
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| Ìtò ẹ̀lẹ́ktrọ́nù | [Kr] 4d1 5s2 |
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| Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 9, 2 |
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| Àwọn ohun ìní ara |
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| Ìfarahàn at STP | solid |
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| Ìgbà ìyọ́ | 1799 K (1526 °C, 2779 °F) |
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| Ígbà ìhó | 3609 K (3336 °C, 6037 °F) |
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| Kíki (near r.t.) | 4.472 g/cm3 |
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| when liquid (at m.p.) | 4.24 g/cm3 |
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| Heat of fusion | 11.42 kJ/mol |
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| Heat of | 365 kJ/mol |
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| Molar heat capacity | 26.53 J/(mol·K) |
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pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 1883 | 2075 | (2320) | (2627) | (3036) | (3607) |
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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: 1.22 |
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| Atomic radius | empirical: 180 pm |
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| Covalent radius | 190±7 pm |
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 Color lines in a spectral rangeSpectral lines of yttrium |
| 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 | 3300 m/s (at 20 °C) |
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| Thermal expansion | (r.t.) (α, poly)
10.6 µm/(m·K) |
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| Thermal conductivity | 17.2 W/(m·K) |
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| Electrical resistivity | (r.t.) (α, poly) 596 n Ω·m |
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| Magnetic ordering | paramagnetic[3] |
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| Young's modulus | 63.5 GPa |
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| Shear modulus | 25.6 GPa |
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| Bulk modulus | 41.2 GPa |
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| Poisson ratio | 0.243 |
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| Brinell hardness | 589 MPa |
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| CAS Number | 7440-65-5 |
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| Main isotopes of yttrium |
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| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
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| 87Y | syn | 3.35 d | ε | - | 87Sr | | γ | 0.48, 0.38D | - | | 88Y | syn | 106.6 d | ε | - | 88Sr | | γ | 1.83, 0.89 | - | | 89Y | 100% | 89Y is stable with 50 neutrons | | 90Y | syn | 2.67 d | β− | 2.28 | 90Zr | | γ | 2.18 | - | | 91Y | syn | 58.5 d | β− | 1.54 | 91Zr | | γ | 1.20 | - |
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Àdàkọ:Category-inline
| references |
