
Blue toruses = 15 protons
Red toruses = 8 nuclear electrons
Atomic number of N15 = protons (15) - nuclear electrons (8) = (7), with structure 1T+6D
Yin-yang photon model of light
Nuclear symmetry,
Nuclear structure of elements

| N10 | N11 | N12 | N13 | N14 | N15 | N16 | N17 | N18 | N19 |
| 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 |
Nitrogen 15 nuclear structure. N15 is a stable isotope (natural abundance = 0.366%).