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The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations (electron shell model), and recurring chemical properties. ...
Scientist
Julius Lothar von Meyer (August 19, 1830 – April 11, 1895) was a German chemist. He was contemporary and competitor of Dimitri Mendeleev to draw up the first periodic table of chemical elements. About ...
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The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations (electron shell model), and recurring chemical properties. ...
Definition
Lead is a chemical element in the carbon group with symbol Pb and atomic number 82. Lead is a soft and malleable metal, which is regarded as a heavy metal and poor metal. Metallic lead has a bluish-wh ...
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