Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 345
6.0(a4 (d) II Mg M IZ. Mg fo.pe). 12 Mg(o,p, … 20Ca(a,o) 20.Ca{a„e^) Diagrammatic representation of the composition of atoms. Each small open circle representsa planetary electron, and the figures inside the heavy circles give the number of protons ( +) andof electrons (—Jin the nucleus. The isotones of lithium (Li), boron (B). neon (Ne).…
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