
Blue toruses = 5 protons
Red toruses = 3 nuclear electrons
Atomic number of He5 = protons (5) - nuclear electrons (3) = (2)
Helium 5 decays by neutron emission (from the left side) of
Helium 5
decay form
and He 4 nucleus
(alpha particle) produced.
Click on image for He4 nucleus.
Photon model
Structure of atomic nuclei

| He3 | He4 | He5 | He6 | He7 | He8 | He9 | He10 |
| H | He | Li | Be | B | C | N | O | F | Ne | Na | Mg | Al | Si | P | S | Cl | Ar |
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |
| Rb | Sr | Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | Te | I | Xe |
| Cs | Ba | Pr | Nd | Sm | Gd | Tb | Dy | Ho | Er | Yb | Ta | W | Os | Ir | Au | Hg | Pb |
He5 atommag szerkezete. Structure and decay mechanism of Helium 5 element nucleus. The destabilized form are ready for decomposition into helium nucleus by neutron emission and production of an alpha particle.