 |
| Scandium |
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| Pípè | /ˈskændiəm/ (SKAN-dee-əm) |
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| Ìhànsójú | silvery white |
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| Ìwúwo átọ̀mù Ar, std(Sc) | 44.955908(5)[1] |
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| Scandium ní orí tábìlì àyè |
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| Nọ́mbà átọ̀mù (Z) | 21 |
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| Ẹgbẹ́ | group 3 |
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| Àyè | àyè 4 |
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| Àdìpọ̀ | Àdìpọ̀-d |
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| Ẹ̀ka ẹ́límẹ́ntì | Transition metal |
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| Ìtò ẹ̀lẹ́ktrọ́nù | [Ar] 3d1 4s2 |
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| Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 9, 2 |
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| Àwọn ohun ìní ara |
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| Ìfarahàn at STP | solid |
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| Ìgbà ìyọ́ | 1814 K (1541 °C, 2806 °F) |
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| Ígbà ìhó | 3109 K (2836 °C, 5136 °F) |
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| Kíki (near r.t.) | 2.985 g/cm3 |
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| when liquid (at m.p.) | 2.80 g/cm3 |
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| Heat of fusion | 14.1 kJ/mol |
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| Heat of | 332.7 kJ/mol |
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| Molar heat capacity | 25.52 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) | 1645 | 1804 | (2006) | (2266) | (2613) | (3101) |
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| Atomic properties |
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| Oxidation states | 0,[2] +1,[3] +2,[4] +3 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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| Electronegativity | Pauling scale: 1.36 |
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| energies | |
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| Atomic radius | empirical: 162 pm |
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| Covalent radius | 170±7 pm |
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| Van der Waals radius | 211 pm |
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 Color lines in a spectral rangeSpectral lines of scandium |
| Other properties |
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| Natural occurrence | primordial |
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| Crystal structure | hexagonal |
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| Thermal expansion | (r.t.) (α, poly)
10.2 µm/(m·K) |
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| Thermal conductivity | 15.8 W/(m·K) |
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| Electrical resistivity | (r.t.) (α, poly)
calc. 562 n Ω·m |
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| Magnetic ordering | paramagnetic |
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| Young's modulus | 74.4 GPa |
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| Shear modulus | 29.1 GPa |
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| Bulk modulus | 56.6 GPa |
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| Poisson ratio | 0.279 |
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| Brinell hardness | 750 MPa |
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| CAS Number | 7440-20-2 |
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| Main isotopes of scandium |
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| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
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| 44mSc | syn | 58.61 h | IT | 0.2709 | 44Sc | | γ | 1.0, 1.1, 1.1 | 44Sc | | ε | - | 44Ca | | 45Sc | 100% | 45Sc is stable with 24 neutrons | | 46Sc | syn | 83.79 d | β− | 0.3569 | 46Ti | | γ | 0.889, 1.120 | - | | 47Sc | syn | 3.3492 d | β− | 0.44, 0.60 | 47Ti | | γ | 0.159 | - | | 48Sc | syn | 43.67 h | β− | 0.661 | 48Ti | | γ | 0.9, 1.3, 1.0 | - |
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Àdàkọ:Category-inline
| references |
