64 Gd 157.25
Gadolinium
Lanthanide
Gadolinium (Gd) is a chemical element with atomic number 64, classified as a lanthanide. At room temperature it is a solid. It was discovered in 1880 by Jean Charles Galissard de Marignac.
Properties
- Atomic number
- 64
- Atomic mass
- 157.25 u
- Category
- Lanthanide
- Group
- 0
- Period
- 6
- Block
- f-block
- Electron configuration
- [Xe] 4f⁷ 5d¹ 6s²
- Phase at STP
- Solid
- Density
- 7.895 g/cm³
- Melting point
- 1585 K (1311.8 °C)
- Boiling point
- 3546 K (3272.8 °C)
- Electronegativity
- 1.2
- Atomic radius
- 233 pm
- Ionization energy
- 6.15 eV
- Discovery
- 1880 · Jean Charles Galissard de Marignac
Common uses
MRI contrast agents, neutron capture, magnets, reactors
Did you know?
Essential for MRI scans and has unique magnetic properties.
Experiment with the elements
Gadolinium doesn't form any compounds in our lab yet, but the periodic table sandbox lets you combine dozens of other real elements into real compounds — water, table salt, ammonia and many more — with their true chemical formulas.