There were about 63 known elements.
Dmitri Ivanovich Mendeleyev. Another spelling of his name is Dmitri Ivanovich Mendeleev.
63 elements were in Dmitri Mendeleev's First periodic table 63 elements were in Dmitri Mendeleev's First periodic table
Russian chemist Dmitri Ivanovich Mendeleyev.
Dmitri Mendeleyev
Dmitri Mendeleev was the Russian chemist who developed the periodic table of elements. He accomplished most of his work during the 1860s. In 1869, he invented a method of arranging the elements that were known at that time in order of their atomic weights.
I assume you know that Dmitri Mendeleyev was the man that discovered the periodic table and left spaces for future findings of elements. He also has an element names after him. He wrote a book. He is a great guy.
He was from Russia.
The periodic table
Mendelevium
a scientist called Mendelev created the periodic table so that all the elements could be easily arranged by their mass
True--PainRain
The Russian Chemist, Dmitri Ivanovich Mendeleyev, founded the periodic table. Mendeleyev was the first person to show the similarities and trends in the properties of chemical elements, and he was acknowledged 50 years later when the 101st element was named after him, mendelevium.