Groups of elements in the periodic table

Each column of the periodic table is called a group, and each row is called a period. The periodic table was developed by a Russian scientist called Dimitri Mendeleev. The periodic table contains all the elements organised into groups and periods, according to their properties. The elements in the same group in the periodic table have similar properties. In addition to groups, elements can be divided into non-metals and metals, which include the transition metals.