Question

Give the number of periods and groups in Modern Periodic Table.

Answer 1

The periodic table is a tabular arrangement of the chemical elements, ordered by their atomic number (number of protons), electron configurations, and recurring chemical properties. The rows of the table are called periods. The columns are called groups. There are seven rows, or periods, which include the two rows found on the island below the table in the periodic table. And there are 18 columns.