Used Known Relative Atomic Masses to Create the Periodic Table

MENDELEEV USED KNOWN RELATIVE ATOMIC MASSES TO CREATE THE PERIODIC TABLE 

Stanislao Cannizzaros main research interests were in the chemistry of carbon compounds found in living organisms. Cannizzaro did much to dispel the then widely held belief that the laws governing those chemicals were different from the laws governing chemicals not found in living organisms. 

Dmitri Mendeleev was a devoted and highly effective teacher. Students adored him and would fill lecture halls to hear him speak about chemistry. Much of his work on the periodic table occurred in his spare time following his lectures. Mendeleev taught not only in the university classrooms but anywhere he traveled. During his journeys by train, he would travel third class with peasants to share his findings about agriculture. 

That Mendeleev was able to predict the properties of new elements helped convince many scientists of the accuracy of Dalton s atomic hypothesis. This in turn helped promote Dalton s proposed atomic nature of matter from a hypothesis to a more widely accepted theory. Mendeleev s chart, which ultimately led to our modern periodic table with its horizontal periods and vertical groups, also helped lay the groundwork for our understanding of atomic behavior and is recognized as one of the most important achievements of modern science. 

The following statements summarize the scientific discoveries presented in Sections 3.2 and 3.3. Place them in chronological order. 

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