Elementkarten
Elementkarten, also known as periodic tables, are graphical representations of the chemical elements, which are arranged in a tabular format according to their atomic number, electron configuration, and recurring chemical properties. The standard version of the periodic table consists of 18 columns, known as groups, and 7 rows, known as periods. The elements are organized in such a way that elements with similar properties appear in the same vertical column, or group.
The periodic table was first published by Dmitri Mendeleev in 1869. Mendeleev's table was based on the
The periodic table is divided into several main groups. Group 1 (alkali metals) and Group 2 (alkaline
The periodic table is a fundamental tool in chemistry, aiding in the prediction of the properties of