EJEMPLOS:
- Potasio (K): 1s2,2s2, 2p6, 3s2, 3p6, 4s1.
- Cloro (Cl): 1s2, 2s2, 2p6, 3s2, 3p5.
- Cobre (Cu): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d9.
- Kriptón (Kr): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6.
- Europio (Eu): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f7.
- Fermio (Fm): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f14, 5d10, 6p6, 7s2, 5f12.
- Plomo (Pb): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f14, 5d10, 6p2.
- Bario (Ba): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2.
- Tungsteno (W): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f14, 5d4.
- Cesio (Cs): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s1.
- Estaño (Sn): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p2.
- Xenón (Xe): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6.
- Torio (Th): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f14, 5d10, 6p6, 7s2, 5f2.
- Hierro (Fe): 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d6.
ANDREA ORTIZ