Dy
Lanthanide
Dysprosium
Z 66A 163mass 162.5
Atomic model
tap a particleEvery nucleon is drawn individually — 66 protons and 97 neutrons packed into the nucleus, with 66 electrons on shells outside.
66+1
Protons
Set the element — change this and it becomes a different atom.
970
Neutrons
Change only these and you get a different isotope of the same element.
66−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 163 (66 p + 97 n)
- Electron shells
- 2 · 8 · 18 · 28 · 8 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 162.5 u
Stability
Dysprosium has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab