67Ho164.93
Holmium
LanthanidesRare-earth metals used in strong magnets, phone screens and lasers.
[Xe] 4f¹¹ 6s²
- Atomic number
- 67
- Atomic mass
- 164.93
- Protons
- 67
- Neutrons
- 98 (most common)
- Electrons
- 67
- Shells
- 2, 8, 18, 29, 8, 2
- State at 25 °C
- Solid
- Position
- Period 6, f-block
Proton (+)Neutron (0)Electron (−)
Discovered byPer Teodor Cleve, 1878Per Teodor Cleve: 2 elements
Named after Holmia, the Latin name for Stockholm.
Did you know?
- It has one of the highest magnetic strengths of any element.
- Its lasers are safe for the eye's surface.
Where it's found
- Rare-earth ores
What it's used for
- Surgical lasers that break up kidney stones
- Parts for very strong magnets
Try it
There's no safe home experiment for Holmium. Explore it with the animated atom above instead.