how is the inventor of periodic table? and how he invented it???
Answers
His periodic table was based on classification of elements according to their atomic masses.
Dmitri Mendeleev: The Man Credited as the Inventor of the Periodic Table
This is the name that is most commonly associated with the invention of the periodic table. Up to this point in time, there was a clear progression towards the concept of a periodic table in the early 19th century. Dmitri Ivanovich Mendeleev, however, was the first person that made a periodic table that was very close to the one we today. Mendeleev's table consisted of the 60 elements that were known at the time. He was a Russian chemist, and he was focused on arranging the elements according to their atomic mass. The formal presentation of his ideas from 1869 was called The Dependence Between the Properties of the Atomic Weights of the Elements. Later that year his periodic table was published in a Russian journal.
He found that when his periodic table was arranged in order of increasing atomic mass, patterns emerged in the elements in the table at regular intervals. This meant that predictions could be made regarding physical properties of elements that haven't even been discovered yet. Further, he also predicted that other elements of various atomic mass would be discovered in the future, and left spaces for those elements in his table.