Fl
Post-transition metal

Flerovium

Z 114A 289mass 289

Atomic model

tap a particle

Every nucleon is drawn individually — 114 protons and 175 neutrons packed into the nucleus, with 114 electrons on shells outside.

114+1
Protons

Set the element — change this and it becomes a different atom.

1750
Neutrons

Change only these and you get a different isotope of the same element.

114−1
Electrons

Sit outside the nucleus and decide the chemistry, not the element.

Element data

Nucleons
289 (114 p + 175 n)
Electron shells
2 · 8 · 18 · 32 · 32 · 18 · 4
Valence shell
4 electrons
Atomic mass
289 u
Stability

Flerovium has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.

Open the decay lab