Name An Element That Was In Mendeleev's Original Table. The periodic table, also known as the periodic table of the (chemical) elements, is a tabular display of the chemical elements.it is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.it is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit a periodic dependence on their atomic. Only 30 elements were known in the year 1800.
The use of the prefix depends on how far the known element is from the unknown element. Mendeleev predicted the properties of two elements based on their positions in the periodic table. It may even be hanging on the wall of your chemistry class.