The periodic table example is often taken into account while preparing it for any purpose. It is basically a table of chemical elements, where all periods as well as groups are organized either in a horizontal or vertical column or row with respect to expending atomic number. We can say in other words as it is a tabular form of representation of all elements present in-universe by the way of periodic manner. All elements in this table are arranged according to the periodic law, which states the elements with similar properties are needed to be arranged in horizontal rows called groups and vertical columns called periods. The aim of using this table is quite simple, as to gain information about any element regarding its atomic mass and chemical symbol. As far as, its history is concerned, a large development was seen in the field of analytical chemistry during 19th century, where many new compounds and elements were discovered which developed the need for their proper classification. To cater this deficiency, J.W. Döbereiner was the first scientist who proposed the idea of triads in which elements were classified in the group of three in which middle elements have atomic weight same

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