one is beryllium, others i don't know.
Atomic Masses
Mendeleev listed the atomic weights and chemical properties of elements as he began to organize them. He noticed that elements with similar properties appeared at regular intervals when arranged by increasing atomic weight.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
By the increasing Atomic Mass.
The first periodic table created by Dmitri Mendeleev in 1869 contained 63 elements, not W elements. Mendeleev arranged the elements based on their atomic masses and properties, predicting the existence of undiscovered elements. His work laid the foundation for the modern periodic table, which is organized by atomic number instead of atomic mass.
Atomic Masses
Mendeleev listed the atomic weights and chemical properties of elements as he began to organize them. He noticed that elements with similar properties appeared at regular intervals when arranged by increasing atomic weight.
Dmitri mendeleev arranged elements in order of increasing atomic masses. He considered chemical properties of the elements, their oxides and nitrides.
Dmitri Mendeleev arranged elements in order of increasing atomic masses. He placed elements in rows and columns.
He arranged the elements in the increasing order of their atomic masses and repeating periodic properties.
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.
Mendeleev arranged elements in his periodic table on the basis of increasing atomic masses.
Dmitri Mendeleev was a scientist. He arranged elements in order of increasing atomic masses.
By the increasing Atomic Mass.
When Mendeleev developed his periodic table, he placed the greatest emphasis on organizing the elements based on their atomic masses and grouping elements with similar properties together. He also left gaps for undiscovered elements and predicted their properties.
Mendeleev organized the elements according to their increasing atomic masses and considered their fundamental properties . He also considered the Hydrides and Oxides formed by the elements.
Dmitri Ivanovich Mendeleev