The time has evidently come for the development of the internal structure of atoms.
Periodic table of elements
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"The periodic law is one of the most important generalizations in chemistry."
Strange & Unusual"By gradually studying matter, people finally take command of it."
Philosophical"I consider it my duty to be useful to my country."
Strange & Unusual"The most all penetrating spirit before which will open the possibility of tilting not tables, but planets, is the spirit of free human inquiry. Believe only in that."
Controversial"There is nothing in science that cannot be explained to a barmaid."
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