
Blue toruses = 18 protons
Red toruses = 10 nuclear electrons
Atomic number of O18 = protons (18) - nuclear electrons (10) = (8), with structure 2T+6D.
The position of nuclear electrons on the central proton nanotube is flexible due to the nesting of electrons with each other.

| O12 | O13 | O14 | O15 | O16 | O17 | O18 | O19 |
| H | He | Li | Be | B | C | N | O | F | Ne | Na | Mg | Si | S | Ar |
| Ca | V | Mn | Fe | Co | Ni | Zn | Ga | Ge | Se | Br | Kr | Rb | Sr | Y |
| Zr | Nb | Mo | Ru | Rh | Pd | Ag | Cd | In | Sn | Sb | I | Xe | Cs | Ba |
| Ce | Pr | Nd | Sm | Gd | Tb | Er | Yb | Ta | W | Os | Ir | Au | Hg | Pb |
Oxygen 18 stable isotope nucleus, natural abundance 0.200 %.