Mendeleev arranged the elements in a tabular format, grouping them according to their similarities in physical and chemical properties. He organized them in increasing atomic mass and noticed that certain patterns emerged. These patterns led him to predict the existence and properties of yet-to-be discovered elements.
Mendeleev's periodic table allowed him to make accurate predictions about the properties and reactivities of elements, paving the way for the systematic classification and study of the chemical elements. Over time, as more elements were discovered, the periodic table was expanded and refined, but the fundamental structure and principles established by Mendeleev remain intact to this day.
It's worth noting that while Mendeleev is widely credited as the primary developer of the modern periodic table, several other scientists also made significant contributions to its evolution. These include John Newlands, who proposed the "Law of Octaves" in 1864, and Julius Lothar Meyer, who developed a periodic table based on atomic volumes in 1869. Mendeleev's work, however, gained broader recognition and had a more profound impact on the scientific community.
