64Gd157.25
Gadolinium
LanthanidesRare-earth metals used in strong magnets, phone screens and lasers.
[Xe] 4f⁷ 5d¹ 6s²
- Atomic number
- 64
- Atomic mass
- 157.25
- Protons
- 64
- Neutrons
- 93 (most common)
- Electrons
- 64
- Shells
- 2, 8, 18, 25, 9, 2
- State at 25 °C
- Solid
- Position
- Period 6, f-block
Proton (+)Neutron (0)Electron (−)
Discovered byJean Charles Galissard de Marignac, 1880Jean Charles Galissard de Marignac: 2 elements
Named after the mineral gadolinite, which honours chemist Johan Gadolin.
Did you know?
- It becomes magnetic when cooled to around room temperature.
- It absorbs neutrons extremely well.
Where it's found
- Rare-earth ores
What it's used for
- MRI scan contrast agents
- Nuclear reactor control
Try it
There's no safe home experiment for Gadolinium. Explore it with the animated atom above instead.