Metale: Aluminiu, Fier, Cupru, Bariu, Zinc, Cesiu, Potasiu, Magneziu, Calciu, Sodiu, Argint, Nemetale: Sulf, Oxigen, Hidrogen, Fosfor, Siliciu, Carbon, Clor, Brom, Iod, Azot, Fluor, Gaze RARE (gaze nobile, elemente zero valente) : Heliu, Neon, Argon, Kripton, Xenon,

Metale, Nemetale, Gaze rare-clasa 7

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