Tb

Terbium-143m

Protons (Z)

65

Neutrons (N)

78

Mass number

143

Half-Life

17.0 s

Abundance

---

Mass

142.935 u

Mass Excess

-60,420.0 keV

Spin

(5/2+)

Discovered

1986

Binding energy per nucleon

8,138 keV

Neutron separation energy

11,931 keV

Proton separation energy

749 keV

Decay Mode

β⁺Gadolinium-143

Decay chain

Terbium-143Z 65 · N 7817.0 s
β⁺
β⁺100%
β⁺100%
β⁺100%
EC~100%