The Periodic-Table
The Periodic-Table is a tabular arrangement of all known Chemical-Elements, organized by their Atomic-Number, electron configurations, and recurring chemical properties. This system allows scientists to observe trends such as Electronegativity, Atomic-Radius, and Ionization-Energy across different Groups and Periods.
The development of the modern table is largely credited to Dmitri-Mendeleev, who in 1869 published the first widely recognized version. He famously predicted the properties of elements yet to be discovered, such as Gallium and Germanium. Today, the table is divided into blocks including the s-block, p-block, d-block, and f-block, housing elements like Hydrogen, Gold, and Uranium.
For official data on element names and properties, refer to the International Union of Pure and Applied Chemistry (IUPAC) or the Royal Society of Chemistry. These organizations maintain the standards for Inorganic-Chemistry globally.