Mendeleev noticed that certain similarities in the chemical properties of elements appeared at regular intervals when teh elements were arranged in order of increasing

Dmitri Mendeleev was born in Siberia, Russia. He was known to be very passionate about chemistry. His discovery of the repetitive properties common to objects with the same interval led to his development of the earliest version of the Periodic Table of Elements. With this, he was able to develop easier way to organize subjects.