Sn

Tin-129m

Protons (Z)

50

Neutrons (N)

79

Mass number

129

Half-Life

6.9 m

Abundance

---

Mass

128.914 u

Mass Excess

-80,556.0 keV

Spin

11/2-

Discovered

1962

Binding energy per nucleon

8,393 keV

Neutron separation energy

5,266 keV

Proton separation energy

13,655 keV

Decay Mode

β⁻Antimony-129100%

Decay chain

Tin-129Z 50 · N 796.9 m
β⁻100%
β⁻100%
β⁻100%
β⁻100%