No, Dmitri Mendeleev did not know about protons. The concept of protons was not discovered until later in the 20th century, after Mendeleev's time. Mendeleev is most famous for creating the periodic table of elements.
Yes, Dimitri Mendeleev (1834-1907) was alive during the discovery of radon (1899-1903).
Dimitri Mendeleev was born on February 8th, 1834.
Mendeleev was born in the village of Verkhnie Aremzyani, near Tobolsk in Siberia.
Independently by Dmitri Mendeleev and Lothar Meyer in 1869
Dmitri Mendeleev
Dmitri Mendeleev.
Dmitri Mendeleev
It was predicted by Dmitri Mendeleev in 1869, but discovered in 1886 by Clemens Winkler.
In 1869, a total of 63 elements had been discovered by. A few were gases. Two were liquids. Most were solid metals.
Dmitri Mendeleev
He was Russian
Most chemists attribute the discovery to Dmtri Mendeleev.
Mendeleev left gaps for eight elements in his periodic table that were yet to be discovered. These gaps eventually corresponded to the elements gallium, germanium, scandium, technetium, francium, and technetium.
Dmitri Mendeleev and Lothar Meyer
Dmitri Mendeleev discovered the Periodic Table from the attempts to systematize properties of the elements.He arranged the elements in to eight groups and twelve rows.
Dmitri Mendeleev was married to Anna, his second wife, in 1882