Isotopes of Bismuth

Notable Isotopes

207Bi [124 neutrons]

Abundance: synthetic

Half life: 31.55 years [ Electron Capture ]

Decay Energy: 2.399 MeV

Decays to 207Pb.

208Bi [125 neutrons]

Abundance: synthetic

Half life: 3368000 years [ Electron Capture ]

Decay Energy: 2.880 MeV

Decays to 208Pb.

209Bi [126 neutrons]

Abundance: 100%

Half life: 1.9 (+-0.2) x 1019 years [ Alpha Decay ]

Decay Energy: ? MeV

Decays to 205Tl.