Yttrium |
| Symbol | Y |
|---|---|
| Latin name | Yttrium |
| Atomic number | 39 |
| Period | 5 |
| Element category | Transition elements |
| Relative atomic mass | 88.90585 |
| Group | III.B |
| Electronegativity | 1.2 |
| Oxidation numbers | 3 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2 |
| Density [g/cm3] | 4.472 |
| State | Solid |
| Melting point [°C] | 1522 |
| Boiling point [°C] | 3200 |
| Atomic radius [pm] | 212 |
| Covalent radius [pm] | 162 |
| Thermal conductivity [W m-1K-1] | 17.2 |
| Heat capacity [J K-1g-1] | 0.3 |
| Discovery | 1794 |
| Brinell hardness [MPa] | 589 |
| Young's modulus [GPa] | 64 |
| Electrical conductivity [S m-1] | 1.8 · 106 |
| Shear modulus [GPa] | 26 |
| 1.st ionization energy [eV] | 6.217 |
| 2.nd ionization energy [eV] | 12.24 |
| 3.rd ionization energy [eV] | 20.52 |
| Stable isotopes | 1 |
| Unstable isotopes | 20 |