Sn

Tin-128m

Protons (Z)

50

Neutrons (N)

78

Mass number

128

Half-Life

6.5 s

Abundance

---

Mass

127.913 u

Mass Excess

-81,270.0 keV

Spin

7-

Discovered

1979

Binding energy per nucleon

8,401 keV

Neutron separation energy

5,871 keV

Proton separation energy

11,679 keV

Decay Mode

γTin-128100%

Decay chain

Tin-128Z 50 · N 786.5 s
γ100%
β⁻100%
β⁻100%