metales: 1: Li, Na, K, Rb, Cs, Fr, Ag / 2: Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd / 3: Al / 1, 2: Cu, Hg / 1,3: Au / 2,3: Fe, Co, Ni / 2,4: Si, Pb, Pt, Pd/ 2,3,6: Cr / 2.3.4.6.7: Mn no metales: ±1,3,5,7: Cl, Br, I, At / ±1: H / ±2: O /±2,4,6: S,Se, Te, Po / 1,2,±3,4,5: N / 1,±3,5: P / ±3,5: As, Sb / 2,±4: C / ±4:Si / ±3: B / BH3: borano / PH3: fosfina / AsH3: arsina / SbH3: estibina / CH4: metano / SiH4: silano / ch3ch2och2ch3 dietiléter/ ch3cooh ácido etanoico/ ch3och3 metimetiléter/ Ác.
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