On 6 March 1869, Mendeleev made a formal presentation to the Russian Chemical Society, entitled The Dependence between the Properties of the Atomic Weights of the Elements, which described elements according to both atomic weight and valence.
In 1869
Cleveland.
Mendeleev developed the first periodic table and Mosely later modernized it.
If you are talking about Dmitri Mendeleev, he was the first to come up with the first periodic table and the periodic law.
Dmitri Mendeleev first periodic table is called Mendeleev's periodic table. Elements are arranged according to atomic mass.
63 elements were in Dmitri Mendeleev's First periodic table 63 elements were in Dmitri Mendeleev's First periodic table
Dmitri Mendeleev published his periodic table in 1869.
Dmitri Ivanovich Mendeleev (1834 - 1907) is considered the father of the periodic table.
In the yer 1869, Mendeleev published the periodic table.
Dmitri Mendeleev created the first periodic table according to atomic mass
Dmitri Mendeleev
Dmitri Mendeleev.