He

Helium-5

Protons (Z)

2

Neutrons (N)

3

Mass number

5

Half-Life

602.0 ys

Abundance

---

Mass

5.012 u

Mass Excess

11,231.0 keV

Spin

3/2-

Discovered

1937

Binding energy per nucleon

5,512 keV

Neutron separation energy

-735 keV

Proton separation energy

20,678 keV

Decay Mode

nHelium-4100%

Decay chain

Helium-5Z 2 · N 3602.0 ys
n100%