he measerd elements by atomic weight and/or mass
the periodic table of elements In this table, elements having similar chemical properties are stacked up. The chemical properties are determined by how many free bonds an atom has open, which is related to how many electrons are in that element's outer shell.
Mendeleev, Bohr - look it up!
Dmitri Mendeleev
the samepattern for how many protons all elements have to they are all factors of each other. That is why the periodic table is set up the way it is in that awkward shape
he knew that later on the gaps would eventually get filled up
The periodic table was created in the 19th century by Dmitri Mendeleev
in order of atomic mass
Dmitri Mendeleev came up with the modern Periodic Table in 1869.
Dmitri Mendeleev was a chemist who is best known for being the first one to sort and set up the Periodic Table of Elements.
Dmitri Mendeleev
It was named by Russian chemist Dmitri Mendeleev in 1869, in memory of his then recently-deceased colleague and clandestine "gentleman friend", Benjamin D. Periodic.
Dmitri Mendeleev.
Mendeleev arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
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 was a chemist who is best known for being the first one to sort and set up the Periodic Table of Elements.
The Periodic Table of the Elements was as currently used was designed by Dmitri Mendeleev. Though I'm not sure how to answer what he was like.
Dmitri Mendeleev is credited with being the first scientist to arrange and classify elements into a chart. He was a Russian chemist who lived from 1834 to 1907.