Question

which of the following statements best explains how elements are grouped in the periodic table?
elements are grouped according to the regions where they were found.
elements are grouped according to when they were discovered.
elements are grouped according to the scientists or team of workers who discovered them.
elements are grouped according to similarities of their properties.

Explanation:

The periodic table organizes elements based on their atomic structure and chemical - physical properties. Elements in the same group have similar out - er electron configurations and thus similar chemical properties. The other options about discovery location, time of discovery, or discoverer are not the basis for grouping in the periodic table.

Answer:

Elements are grouped according to similarities of their properties.