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he put them in groups to show acids from alkali's and gasses from metals
increasing Proton number.
The Russian chemist Dmitri Mendeleev was the first person to arrange all elements into families. He created the periodic table of elements and wrote a textbook between 1868 and 1870.
Mendeleev arranged the elements in a table with the rows ordered by atomic mass and the columns ordered the elements properties.
mandeleev didn't know spaces in the Periodic Table because he doesn't arrange it john Kepler arrange it most of mendeleev discoveries of elements are few most of other element where discover by other scientist after him in 19th century
Mendeleev arranged the elements according to their atomic weight and valence.
Atomic Mass.
Dmitri Mendeleev
Mendeleev arranged the elements in the periodic table according to their atomic masses.
your mums atomic acid
mendelev arranged the elements in the periodic table in the asending order of the mass number of elements.
Dmitri Mendeleev
Dmitri Mendeleev
increasing Proton number.
he put them in groups to show acids from alkali's and gasses from metals
Both arrange elements in groups of elements having similar properties.
Both arrange elements in groups of elements having similar properties.