The elements are arranged in what is called the periodic table.
Meneleev arranged the elements
The Periodic Table of Elements.
you call them an arranger
Atomic Mass.
mendelev arranged the elements in the periodic table in the asending order of the mass number of elements.
Dmitri Mendeleev
The mass of the elements
The periodic table
He arranged the elements in order of atomic number.
atomic weight
Dmitri Mendeleev
He had to arrange the elements in a specific sequence to unlock the hidden pattern.