depa.fquim.unam.mxdepa.fquim.unam.mx/amyd/archivero/Lewis_36180.pdf · The chemical symbol for the...
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depa.fquim.unam.mxdepa.fquim.unam.mx/amyd/archivero/Lewis_36180.pdf · The chemical symbol for the atom is surrounded by a number of dots corresponding to the number of valence electrons