Og
Noble gas
Oganesson
Z 118A 294mass 294
Atomic model
tap a particleEvery nucleon is drawn individually — 118 protons and 176 neutrons packed into the nucleus, with 118 electrons on shells outside.
118+1
Protons
Set the element — change this and it becomes a different atom.
1760
Neutrons
Change only these and you get a different isotope of the same element.
118−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 294 (118 p + 176 n)
- Electron shells
- 2 · 8 · 18 · 32 · 32 · 18 · 8
- Valence shell
- 8 electrons
- Atomic mass
- 294 u
Stability
Oganesson has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab