Y

Yttrium-78m

Protons (Z)

39

Neutrons (N)

39

Mass number

78

Half-Life

5.8 s

Abundance

---

Mass

77.944 u

Mass Excess

-52,170.0 keV

Spin

(5+)

Discovered

1998

Binding energy per nucleon

8,349 keV

Neutron separation energy

13,801 keV

Proton separation energy

1,656 keV

Decay Mode

Decay chain

Yttrium-78Z 39 · N 395.8 s
β⁺100%
β⁺100%
β⁺100%