Autoethnography As time passes one sees the changes that occurs within themselves such as interest and skills. Reflecting on my past made me realize that as a kid I have always loved to play soccer but the problem was that I wasn't the child prodigy like most of the kids were.
Dmitri Mendeleev was a Russian chemist who lived from 1834-1907. He is considered to be the most important contributor to the development of the periodic table. His version of the periodic table organized elements into rows according to their atomic mass, and into columns based on chemical and physical properties.Using his table, Mendeleev was able to predict characteristics of undiscovered elements.To unlock this lesson you must be a Study.com Member.hile constructing his version of the periodic table, Mendeleev noticed that some spaces were better left empty, because there was no known element that had the necessary characteristics. Mendeleev hypothesized that these empty spaces were for elements that had not been discovered yet.
When Dmitri Mendeleev created the Periodic Table of the Elements, he decided against arranging them by their atomic numbers based on his correct assumption that those numbers were not totally accurate.