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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)
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(3036)
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(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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Spectral 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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Àdàkọ:Category-inline | references |