The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic number, electron configurations, and recurring chemical properties. It is generally accepted that the modern periodic table was first published by Dmitri Mendeleev in 1869, although several other scientists had developed similar tables prior to this. The periodic table has since been modified and expanded to include new elements as they have been discovered, and it is now an essential tool for chemists and other scientists.
The periodic table is not merely a list of elements, however. It is a powerful tool that can be used to understand and predict the behavior of elements and to explore the relationships between them.
