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The top documents tagged [anumber of valence electrons]
Orbital filling table (1869) Dmitri Mendeleev(Russian chemist) shows a first version of the periodic table. He noticed that classifying the elements
214 views
PERIODIC TABLE. (1869) Dmitri Mendeleev(Russian chemist) shows a first version of the periodic table. He noticed that classifying the elements by their
237 views
(1869) Dmitri Mendeleev(Russian chemist) shows a first version of the periodic table. He noticed that classifying the elements by their atomic mass a
229 views