Mendeleev arranged the elements according to their atomic weight and valence.
Mendeleev arranged the elements in the periodic table according to their atomic masses.
This is called the "Periodic Law" or "Principle of Periodicity".
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
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Meneleev arranged the elements
The elements are arranged in what is called the periodic table.
The Periodic Table of Elements.
mendelev arranged the elements in the periodic table in the asending order of the mass number of elements.
The mass of the elements
The periodic table
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.
He arranged the elements in order of atomic number.