The periodic table is an arrangement of the chemical elements, organised on the basis of their atomic numbers, electronic configuration and recurring chemical properties. Elements are presented in order of increasing atomic number. The standard form of the table consists of a grid of elements, with rows called periods and columns called groups.

In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table. A Russian chemist called Dmitri Mendeleev published a periodic table. Mendeleev also arranged the elements known at the time in order of relative atomic mass, but he did some other things that made his table much more successful.

Just five years after John Newlands put forward his law of octaves. An octave was One of the first attempts at a periodic table, known as “Newlands octaves”.

Antoine Lavoiser was a French nobleman and chemist central to the 18th-century chemical revolution and had a large influence on both the history of chemistry and the history of biology.

The periodic table is very helpful to us humans, it helps us to understand the elements and how they react to different things.