Solution:

• The periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties.
• The seven rows of the table, called periods, generally have metals on the left and non-metals on the right.
• The columns, called groups, contain elements with similar chemical behaviours.
• Six groups have accepted names as well as assigned numbers: for example, group 17 elements are the halogens; and group 18 are the noble gases.
• Also displayed are four simple rectangular areas or blocks associated with the filling of different atomic orbitals.