64
Gd
Gadolinium
Lanthanide period 6 f-block discovered: 1880
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 64
- Atomic mass
- 157.25 a.m.u.
- Electron configuration
- [Xe]6s2 4f7 5d1
- Electronegativity
- 1.2 on the Pauling scale
- Atomic radius
- 237 pm
- Ionization energy
- 6.150 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
- 1586 K (1 312,85 °C)
- Boiling point
- 3546 K (3 272,85 °C)
- Density
- 7.90 g/cm³