Isotopes of Radium

Notes

Ra-224, Ra-226 and Ra-228 are all generated in the decay of either Uranium or Thorium.

Notable Isotopes

224Ra [136 neutrons]

Abundance: ?

Half life: 3.6319 days [ Alpha Decay ]

Decay Energy: 5.789 MeV

Decays to 220Rn.

226Ra [138 neutrons]

Abundance: trace

Half life: 1602 years [ Alpha Decay ]

Decay Energy: 4.871 MeV

Decays to 222Rn.

228Ra [140 neutrons]

Abundance: Synthetic

Half life: 6.7 years [ beta- ]

Decay Energy: 0.046 MeV

Decays to 228Ac.