Helium nuclide, one top proton and one bottom proton on the nucleus, fully fill the first period, to form the Helium nuclide. On the periodic table of elements, which is corresponding to the pattern 2 block.
1 |
|
2 |
H |
|
He |
He 4
Proton: 2
Neutron: 2
Spin: 0
Stable