The periodic table
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Periodic Table of Elements. gold silver helium oxygen mercury hydrogen sodium nitrogen niobium neodymium chlorine carbon.
Periodic Table of Elements. Mendeleev In 1869, Dmitri Ivanovitch Mendeléev created the first accepted version of the periodic table. He grouped elements.
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Periodic Table Science
Elements and periodic table
Periodic table
the basics of chemistry
Periodic table (1)
Many ancient scholars believed matter was composed of such things as earth, water, air, and fire. Many believed matter could be endlessly divided into.
