Elements were discovered over the centuries.
It took nearly 3 centuries to give the present look of the periodic table.
This is a very well constructed table which can give a panoramic view of the properties of elements.
The periodic table is a table of the chemical elements in which the elements are
arranged in order according to atomic number in such a way that the periodic properties (chemical
periodicity) of the elements are made clear.
The standard form of the table includes
periods (usually horizontal in the periodic table) and groups (usually vertical).
Elements in groups have some similar properties to each other. There is no one single
or best structure for the periodic table but by whatever consensus there is, the
form used here is very useful.
The periodic table is a masterpiece of organized
chemical information. The evolution of chemistry's periodic table into the current
form is an astonishing achievement with major contributions from many famous chemists
and other eminent scientists. Of the 116 elements in periodic table, chemists have
grouped them as alkali metals, alkaline earth metals, transition elements, inner transition elements,
p‐block elements (excluding halogens), halogens and noble gases. The location of these seven groups is in an inter‐linked manner
based on their physical and chemical properties. For example, the 1st group of elements in periodic table is named for the alkaline
(or basic) nature of their oxides and for the basic solutions the elements form in water.