Bh
Transition metal
Bohrium
Z 107A 270mass 270
Atomic model
tap a particleEvery nucleon is drawn individually — 107 protons and 163 neutrons packed into the nucleus, with 107 electrons on shells outside.
107+1
Protons
Set the element — change this and it becomes a different atom.
1630
Neutrons
Change only these and you get a different isotope of the same element.
107−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 270 (107 p + 163 n)
- Electron shells
- 2 · 8 · 18 · 32 · 32 · 13 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 270 u
Stability
Bohrium has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab