La

Lanthanum-146m

Protons (Z)

57

Neutrons (N)

89

Mass number

146

Half-Life

6.08 s

Abundance

---

Mass

145.926 u

Mass Excess

-69,079.7 keV

Spin

(1-)

Discovered

1969

Binding energy per nucleon

8,239 keV

Neutron separation energy

4,316 keV

Proton separation energy

8,853 keV

Decay Mode

β⁻Cerium-146100%

Decay chain

Lanthanum-146Z 57 · N 896.08 s
β⁻100%
β⁻100%
β⁻100%