39
Y
Yttrium
Transition metal period 5 group 3 d-block discovered: 1794
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 39
- Atomic mass
- 88.90584 a.m.u.
- Electron configuration
- [Kr]5s2 4d1
- Electronegativity
- 1.22 on the Pauling scale
- Atomic radius
- 219 pm
- Ionization energy
- 6.217 eV
- Electron affinity
- 0.307 eV
- Oxidation states
- +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 1795 K (1 521,85 °C)
- Boiling point
- 3618 K (3 344,85 °C)
- Density
- 4.47 g/cm³