Hg
Transition metal
Mercury
Z 80A 201mass 200.59
Atomic model
tap a particleEvery nucleon is drawn individually — 80 protons and 121 neutrons packed into the nucleus, with 80 electrons on shells outside.
80+1
Protons
Set the element — change this and it becomes a different atom.
1210
Neutrons
Change only these and you get a different isotope of the same element.
80−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 201 (80 p + 121 n)
- Electron shells
- 2 · 8 · 18 · 32 · 18 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 200.59 u
Stability
Mercury has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab