La

Lanthanum-136m

Protons (Z)

57

Neutrons (N)

79

Mass number

136

Half-Life

114.0 ms

Abundance

---

Mass

135.908 u

Mass Excess

-85,780.0 keV

Spin

(7-)

Discovered

1966

Binding energy per nucleon

8,374 keV

Neutron separation energy

7,208 keV

Proton separation energy

5,218 keV

Decay Mode

γLanthanum-136100%

Decay chain

Lanthanum-136Z 57 · N 79114.0 ms
γ100%
β⁺100%