Bi
Post-transition metal
Bismuth
Z 83A 209mass 208.98
Slow-motion stage
Bismuth-214
proton
neutron
electron (β⁻)
Parent nucleus · 214 nucleons
83 protons (coral) and 131 neutrons (blue) are packed together and held by the strong force.
A real decay takes about 10⁻²¹ s. At ⅓× this stage stretches it across eleven seconds.
Choose a reaction
Reaction
21483Bi21484Po+β⁻+ ν̄
A neutron turns into a proton. An electron and an antineutrino fly out.
Z
8384
+1
A
214214
no change
n⁰
131130
-1
Energy released
3.27MeV
Electron (max)3.270 MeV
Mass convertedE = Δm c²0.00351 u
In joules5.24 × 10-13 J
Compared with a bonda C–C bond is 3.6 eV≈ 908,333 ×
Half-life of Bismuth-214
19.9 minutes
One of the most energetic beta emitters found in nature.
The particle
- Charge
- −1
- Mass
- 1/1836 u
- Speed
- Up to 99.9% of the speed of light
- Ionising power
- Moderate
- Stopped by
- A few millimetres of aluminium