Question

Mendeleev’s periodic table shocked the scientific community because it contradicted earlier findings about element mass and properties. True or False?

Answer 1

False,

The most amazing part of Mendeleev’s periodic table was that he left blank spaces for the elements which were yet to be discovered. He predicted the atomic mass and chemical properties of these yet to be discovered elements.

Answer 2

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.