| Y | Yttrium | Transition Metal |
| Atomic number: | 39 | Atomic weight: | 88.90585 | ||
| Shells: | 2,8,18,9,2 | Orbitals: | [Kr] 4d1 5s2 | ||
| Melting point: | 1522°C ±8°C | Boiling point: | 3338°C | ||
| Covalent radius: | 1.62 | Å | Atomic volume: | 19.8 | cm³/mol |
| Atomic radius: | 2.27 | Å | Ionic radius: | 1.02 (+3) | Å |
| Electronegativity: | 1.22 | Oxidation states: | |||
| 1st ionization pot.: | 6.217 | V | 2nd ionization pot.: | 12.24 | V |
| 3rd ionization pot.: | 20.52 | V | Specific heat: | 0.30 | J/gK |
| Heat of fusion: | 11.40 | kJ/mol | Heat of vapor.: | 363.0 | kJ/mol |
| Thermal conduct.: | 0.172 | W/cmK | Electrical conduct.: | 0.0166 | 10^6/cm ohm |
| Density: | 4.47 | g/cm³ | Valence: | 3 |