If what is meant is by mean Atomic Mass , then they almost fall into "groups" or families of elements with similar chemical properties. HOWEVER there are exceptions where the sequence is "odd" notably
Putting potassium with the noble gases and argon in the alkali metals would be confusing.
This is why the Periodic Table is sequenced by ATOMIC NUMBER not by mean atomic mass.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
By the increasing Atomic Mass.
Mendeleev arranged the elements in a table in the increasing order of atomic masses and repeating periodic properties. In the modern long-form of periodic table, the elements are arranged in the increasing order of atomic number and repeating periodic properties.
Dmitri arranged elements in order of increasing atomic masses. He considered chemical properties of the elements.
Early attempts at organizing the elements were arranged according to their atomic mass. This led to the development of the periodic table by Dmitri Mendeleev in 1869, where elements were grouped based on their chemical and physical properties.
Dmitri arranged the elements in order of increasing atomic masses. He arranged elements in rows and columns according to atomic masses.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
By the increasing Atomic Mass.
Mendeleev arranged the elements are arranged in order of increasing atomic masses. He founded that properties of elements are periodic when arranged in this pattern.
in order of their reletive atomic masses
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
Elements are arranged in a periodic table by atomic number, lower on top and left. Atomic masses have no direct relationship to the arrangement of atoms, although generally atoms with higher atomic numbers will have higher atomic masses. (There are at least three exceptions for atoms with atomic numbers differing by 1.)
Dmitri Mendeleev was a scientist. He arranged elements in order of increasing atomic masses.
Dmitri Mendeleev and Lothar Meyer first arranged the elements in the increasing order of atomic masses. Bohr and Henry Moseley then arranged the elements in the increasing order of atomic number.
In the first Periodic Table by Mendeleev, he arranged the elements in the increasing order of their atomic masses and repeating properties.
Mendeleev arranged the elements in a table in the increasing order of atomic masses and repeating periodic properties. In the modern long-form of periodic table, the elements are arranged in the increasing order of atomic number and repeating periodic properties.
Dmitri arranged elements in order of increasing atomic masses. He considered chemical properties of the elements.