Beryllium Isotopes
Isotope
Half-life
Decay Mode
Beryllium-7 (^7Be)
53.22 days
Beta decay to Lithium-7
Beryllium-9 (^9Be)
Stable
None
Beryllium-10 (^10Be)
1.39 million years
Beta decay to Boron-10
Beryllium-11 (^11Be)
13.81 seconds
Beta decay to Boron-11