Ne
Noble gas
Neon
Z 10A 20mass 20.18
Atomic model
tap a particleEvery nucleon is drawn individually — 10 protons and 10 neutrons packed into the nucleus, with 10 electrons on shells outside.
10+1
Protons
Set the element — change this and it becomes a different atom.
100
Neutrons
Change only these and you get a different isotope of the same element.
10−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 20 (10 p + 10 n)
- Electron shells
- 2 · 8
- Valence shell
- 8 electrons
- Atomic mass
- 20.18 u
Stability
Neon has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab