Tb

Terbium-142m

Protons (Z)

65

Neutrons (N)

77

Mass number

142

Half-Life

303.0 ms

Abundance

---

Mass

141.94 u

Mass Excess

-56,280.0 keV

Spin

5-

Discovered

1986

Binding energy per nucleon

8,110 keV

Neutron separation energy

9,811 keV

Proton separation energy

345 keV

Decay Mode

γTerbium-142100%

Decay chain

Terbium-142Z 65 · N 77303.0 ms
γ100%
β⁺99.998%
β⁺100%
β⁺100%
β⁺100%
β⁺100%