he read about it in the newspaper
Mendeleev developed the first periodic table and Mosely later modernized it.
In 1869
The periodic table is from 1869.
Mendeleev created a new row on the periodic table every time chemical properties were repeated.
Cleveland.
Mendeleev supposed that a new row is necessary in the periodic table after the discovery of lanthanoides.
He helped create the periodic table but Mendeleev beat him to it.
Dmitri Mendeleev created the first periodic table according to atomic mass
If you are talking about Dmitri Mendeleev, he was the first to come up with the first periodic table and the periodic law.
Arsenic did not create the first periodic table. The first periodic table was created by Dmitri Mendeleev, a Russian chemist, in the 1860s. Other scientists had organized elements in other ways prior to the invention of Mendeleev's periodic table, but the other methods were criticized and did not catch on.
yes, demetri did create the first periodic table but Henery Mosley updated it years later.
your question does not make sense. your question does not make sense.