Question

What are ‘groups’ and ‘periods’ in the periodic table?

Answer 1

Hint: Periodic table is a tabular form of chemical elements, those are arranged by atomic numbers, electron configuration and their chemical and physical properties. This periodic table has groups and periods. Those elements which have atomic numbers one to one hundred and eighteen have all been discovered and they sit on the seven rows of the periodic table.

Complete answer:
The vertical columns in the periodic table are called groups. The horizontal rows in the periodic table are called periods. This periodic table has seven rows or periods, which generally contains metals on the left and nonmetals on the right. And the groups contain elements which have similar chemical characteristics. Element ninety five to one hundred and eighteen have only been discovered in laboratories not in real life. The synthesis of those elements has a higher atomic number. Group seventeen elements are halogens and group eighteen elements are Noble gasses. Noble gasses are, helium, neon, argon, krypton, xenon, radon and oganesson. These Noble gasses are colorless, tasteless, odorless and nonflammable. The halogens are, fluorine, chlorine, bromine, iodine, and astatine. But tennessine also may be a halogen. This is an artificially created element.

Note:
The organization of periodic tables can be utilized to make relationships between the various element properties and also from this we can predict the chemical properties of these elements and the behaviors also. Sometimes we can predict physical behavior also. The first ninety two elements occur naturally. But we have only a trace of some of them.