Y
Transition metal
Yttrium
Z 39A 89mass 88.906
Atomic model
tap a particleEvery nucleon is drawn individually — 39 protons and 50 neutrons packed into the nucleus, with 39 electrons on shells outside.
39+1
Protons
Set the element — change this and it becomes a different atom.
500
Neutrons
Change only these and you get a different isotope of the same element.
39−1
Electrons
Sit outside the nucleus and decide the chemistry, not the element.
Element data
- Nucleons
- 89 (39 p + 50 n)
- Electron shells
- 2 · 8 · 18 · 9 · 2
- Valence shell
- 2 electrons
- Atomic mass
- 88.906 u
Stability
Yttrium has no measured radioactive isotope in this lab — its nuclei are stable, so decay must be shown as an illustration.
Open the decay lab