Yttrium (Y)
Yttrium (Y) is element 39 of the periodic table, a transition metal in period 5 and group 3. Its standard atomic weight is 88.905838, so one mole of yttrium atoms has a mass of 88.905838 g. At room temperature it is a solid; it melts at 1521.85 °C and boils at 3344.85 °C.
| Atomic number | 39 |
|---|---|
| Symbol | Y |
| Standard atomic weight | 88.905838 |
| Molar mass | 88.905838 g/mol |
| Category | Transition metal |
| Group | 3 |
| Period | 5 |
| Block | d-block |
| Electron configuration | [Kr] 5s2 4d1 |
| Oxidation states | +3 |
| Electronegativity (Pauling) | 1.22 |
| Atomic radius (van der Waals) | 219 pm |
| First ionisation energy | 6.217 eV (599.8 kJ/mol) |
| Electron affinity | 0.307 eV |
| State at room temperature | Solid |
| Melting point | 1795 K (1521.85 °C) |
| Boiling point | 3618 K (3344.85 °C) |
| Density | 4.47 g/cm³ |
| Discovered | 1794 |
Group 3
Calculate with Yttrium
Atomic weight: IUPAC CIAAW standard atomic weight. Other properties: PubChem (U.S. National Library of Medicine, public domain). Values such as melting point and radius depend on how they were measured; check a data book for precise work.