Bi

Bismuth-207

Protons (Z)

83

Neutrons (N)

124

Mass number

207

Half-Life

31.22 y

Abundance

---

Mass

206.978 u

Mass Excess

-20,054.6 keV

Spin

9/2-

Discovered

1950

Binding energy per nucleon

7,855 keV

Neutron separation energy

8,098 keV

Proton separation energy

3,558 keV

Decay Mode

β⁺Lead-207100%

Decay chain

Bismuth-207Z 83 · N 12431.22 y
β⁺100%