65Tb158.93
Terbium
LanthanidesRare-earth metals used in strong magnets, phone screens and lasers.
[Xe] 4f⁹ 6s²
- Atomic number
- 65
- Atomic mass
- 158.93
- Protons
- 65
- Neutrons
- 94 (most common)
- Electrons
- 65
- Shells
- 2, 8, 18, 27, 8, 2
- State at 25 °C
- Solid
- Position
- Period 6, f-block
Proton (+)Neutron (0)Electron (−)
Discovered byCarl Gustaf Mosander, 1843Carl Gustaf Mosander: 3 elements
One of four elements named after Ytterby, a village in Sweden.
Did you know?
- It glows bright green under UV light.
- Terfenol-D is used in sonar devices.
Where it's found
- Rare-earth ores
What it's used for
- Green light in screens
- Terfenol-D, a material that changes shape in magnetic fields
Try it
There's no safe home experiment for Terbium. Explore it with the animated atom above instead.