107Bh[270]
Bohrium
Transition metalsHard, shiny metals that conduct heat and electricity well and often form coloured compounds.
[Rn] 5f¹⁴ 6d⁵ 7s²
- Atomic number
- 107
- Atomic mass
- [270]
- Protons
- 107
- Neutrons
- 163
- Electrons
- 107
- Shells
- 2, 8, 18, 32, 32, 13, 2
- State at 25 °C
- Unknown
- Position
- Group 7, period 7
Proton (+)Neutron (0)Electron (−)
Discovered byPeter Armbruster and Gottfried Münzenberg at GSI Darmstadt, 1981Peter Armbruster: 6 elementsGottfried Münzenberg: 3 elements
Named after Niels Bohr, who created the shell model of the atom.
Did you know?
- It was made by fusing bismuth and chromium nuclei.
- Its atoms last only seconds.
Where it's found
- Made only in laboratories, a few atoms at a time
What it's used for
- Scientific research only
Try it
There's no safe home experiment for Bohrium. Explore it with the animated atom above instead.