Cu
Transition metal
Copper
Z 29A 64mass 63.546
Atomic model
tap a particleEvery nucleon is drawn individually — 29 protons and 35 neutrons packed into the nucleus, with 29 electrons on shells outside.
29+1
Protons
Set the element — change this and it becomes a different atom.
350
Neutrons
Change only these and you get a different isotope of the same element.
29−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 64 (29 p + 35 n)
- Electron shells
- 2 · 8 · 17 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 63.546 u
Stability
Copper has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab