Respuesta :
Answer:
FALSE
Explanation:
The organization of the elements was presented by Mendeleev to the scientific community, and gave rise to what we know today as the "Periodic Table", in which the elements are arranged in horizontal rows, according to the growing atomic masses, and also in vertical columns, with elements of similar properties. With Mendeleev's Periodic Table of Chemical Elements, some questions about the constitution of our material universe began to be answered by chemists, as were the simple substances that constituted it. Through the periodic table, one can be sure for the first time that matter was not made up of a single element. Therefore, the table confirmed suspicions and helped the chemists to mark their searches.
False, Mendeleev’s periodic table did not contradict earlier findings about element mass and properties because it was based on atomic masses.
Mendeleev’s periodic table was not the first periodic table that was predicated upon atomic masses. The periodic table published by John Newlands 1864 was also based on atomic weights. His table also had spaces just like that of Mendeleev but he did not predict the properties of the yet to be discovered elements. Mendeleev’s periodic table was published in 1869.
Hence, Mendeleev's periodic table did not contradict the earlier findings about element mass and properties.
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