The most prevalent category of elements on the periodic table consists of metals. Curiously, gold and copper are the only two exceptions to this rule, as they do not possess the characteristic silvery appearance typical of most metals.
Dmitri Mendeleev is widely recognized as the founding figure behind the periodic table. In his role as a professor at St. Petersburg State University, Mendeleev faced the task of providing descriptions for all known chemical elements within a limited timeframe. To expedite this process, he compiled a comprehensive dataset of atomic weights, resulting in the periodic table’s organization by atomic weight.
