64 Gd
Lanthanide
Gadolinium
Used in MRI contrast agents.
Properties of Gadolinium
- Atomic number (Z)
- 64
- Symbol
- Gd
- Atomic mass
- 157.25 g/mol
- Category
- Lanthanide
- Group
- 3
- Period
- 6
- Electron configuration
- [Xe] 4f⁷ 5d¹ 6s²
- Electronegativity (Pauling)
- 1.2
- Atomic radius
- 233 pm
- First ionization energy
- 593 kJ/mol
- Melting point
- 1585 K (1311.8 °C)
- Boiling point
- 3546 K (3272.8 °C)
- Density
- 7.895 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1880