Periodic table group

A periodic table group is a vertical column in the periodic table of the chemical elements. There are 18 groups in the standard periodic table.

Related Topics:
Periodic table - Chemical element

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It is no accident that several of these correspond directly to chemical series: the periodic table was originally created to organize the known chemical series into a single coherent scheme.

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The modern explanation of the pattern of the periodic table is that the elements in a group have similar configurations of the outermost electron shells of their atoms: as most chemical properties are dominated by outer electron interactions, this tends to give elements in the same group similar physical and chemical properties.

Related Topics:
Electron shell - Physical - Chemical properties

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