39 Y
Transition metal
Yttrium
Used in LEDs.
Properties of Yttrium
- Atomic number (Z)
- 39
- Symbol
- Y
- Atomic mass
- 88.906 g/mol
- Category
- Transition metal
- Group
- 3
- Period
- 5
- Electron configuration
- [Kr] 4d¹ 5s²
- Electronegativity (Pauling)
- 1.22
- Atomic radius
- 212 pm
- First ionization energy
- 600 kJ/mol
- Melting point
- 1799 K (1525.8 °C)
- Boiling point
- 3609 K (3335.8 °C)
- Density
- 4.469 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1794