Cn
Transition metal
Copernicium
Z 112A 285mass 285
Atomic model
tap a particleEvery nucleon is drawn individually — 112 protons and 173 neutrons packed into the nucleus, with 112 electrons on shells outside.
112+1
Protons
Set the element — change this and it becomes a different atom.
1730
Neutrons
Change only these and you get a different isotope of the same element.
112−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 285 (112 p + 173 n)
- Electron shells
- 2 · 8 · 18 · 32 · 32 · 18 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 285 u
Stability
Copernicium has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab