| Property | Value |
|---|---|
| Atomic number | 21 |
| Atomic weight | 44.9559126 amu |
| Element family | Transition metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 45Sc: 100% |
| Previous element | Calcium |
| Next element | Titanium |
| Density | 2.989 g/cm3 (STP) |
| Melting | 1539 °C |
| Boiling | 2832 °C |
| Covalent radius | 1.48 Å |
| Van der Waals radius | 2.11 Å |
| Ionic radius | 0.745 Å |
| Metallic radius | 1.62 Å |
| First ionization potential | 6.561 eV |
| Electron affinity | 0.188 eV |
| Electronegativity | 1.36 |
| Discovery year | 1879 |
| Sample reactions |
|---|
| Sc + Cl2 = ScCl3 |
| Sc + HBr = ScBr3 + H2 |
| Sc + H2O = Sc(OH)3 + H2 |
Scandium is an element number 21 from transition metals family. Its symbol is Sc. Scandium atomic weight is 44.9559126 amu. Sc stable and long lived isotopes are 45Sc: 100%. Scandium electronic configuration is 1s22s22p63s23p64s23d1. Sample compounds that contain Scandium are ScCl3, Sc2O3, Sc2(CO3)3, Sc(OH)3.
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