84Po[209]
Polonium
Post-transition metalsSofter metals with lower melting points, often used in alloys and solders.
[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴
- Atomic number
- 84
- Atomic mass
- [209]
- Protons
- 84
- Neutrons
- 125
- Electrons
- 84
- Shells
- 2, 8, 18, 32, 18, 6
- State at 25 °C
- Solid
- Position
- Group 16, period 6
Proton (+)Neutron (0)Electron (−)
Discovered byMarie and Pierre Curie, 1898Marie Curie: 2 elementsPierre Curie: 2 elements
The Curies found it in uranium ore and named it after Marie's homeland, Poland.
Did you know?
- It is intensely radioactive and toxic.
- It was the first element discovered by the Curies.
Where it's found
- Tiny traces in uranium ore
What it's used for
- Anti-static brushes for film and camera lenses
Try it
There's no safe home experiment for Polonium. Explore it with the animated atom above instead.