What are the main uses of scandium

Scandium

Generally Name, symbol, atomic number Scandium, Sc, 21 seriesTransition metalsGroup, period, block3, 4, dDensity, Mohs hardness 2985 kg / m3, k. A. Look silvery white Atomic Atomic weight 44.955910 amu Atomic radius (calculated) 160 (184) pmCovalent radius 144 pmvan der Waals radius k. A. Electron configuration [Ar] 3d3d1 4s2e- 's pro energy level 2, 8, 9, 2 Oxidation states (oxide) 3 (weakly basic) Crystal structure hexagonal Physically Physical state (magnetism) firmly (__) Melting point 1814 K (1541 ° C) boiling point 3103 K (2830 ° C) Molar volume 15,00 · 10-3m3/ molHeat of evaporation 314.2 kJ / molHeat of fusion 14.1 kJ / mol Vapor pressure 22.1 Pa at 1812 K. Speed ​​of sound k. A. m / s at 293.15 K. various Electronegativity 1.36 (Pauling scale) Specific heat capacity 568 J / (kg K)Electric conductivity 1,77 · 106/ m ohmThermal conductivity 15.8 W / (m K) 1. Ionization energy 633.1 kJ / mol 2. Ionization energy 1235.0 kJ / mol 3. Ionization energy 2388.6 kJ / mol 4. Ionization energy 7090.6 kJ / mol 5. Ionization energy 8843 kJ / mol 6. Ionization energy 10679 kJ / mol 7. Ionization energy 13310 kJ / mol 8. Ionization energy 15250 kJ / mol 9. Ionization energy 17370 kJ / mol 10. Ionization energy 21726 kJ / mol Most stable isotopes NMR properties Nuclear spin 7/2 gamma 6,499 · 107rad / T sensitivity 0,301 Larmor frequency at B. = "4", 7T 48.6 MHz