Who is credited with creating the first periodic table?
A. Johann Dobereiner
B. Henry Moseley
C. Dmitri Mendeleev
D. John Newlands
Answer (2)
Dmitri Mendeleev is credited with creating the first periodic table in 1869, organizing elements by atomic mass and properties. His table left gaps for undiscovered elements, paving the way for the modern periodic table. Before him, scientists like John Newlands and Johann Dobereiner made significant contributions to element classification. ;
Dmitri Mendeleev is credited with creating the first periodic table in 1869, arranging elements by atomic mass and properties. His table was notable for leaving gaps for undiscovered elements, which helped predict their properties. Mendeleev's work laid the foundation for the modern periodic table we use today.
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