Mendeleev: The Periodic Table

The periodic table that we know and use today is not the same periodic table we have always used. When the first periodic table was created in 1869, Russian chemist Dimitri Mendeleev had limited known elements making the table significantly different from the one we use today. Although both the Mendeleev periodic table and the modern periodic table look similar in shape, the organizational difference is what makes them unique.
In Mendeleev’s time there were only 60 known elements. He knew there was need for a system of organization of the elements and thought his idea would be more useful than previous organizations. His periodic table was quite small in size compared to the modern table. Because we no longer use Mendeleev’s original table,

We have more ways to learn about new elements and how to organize them. The modern system of organization by atomic mass it better than atomic weight because atomic mass is used more and portrays more trends. I think it 's crazy that the way Mendeleev found out to organize the table was solitaire. Mendeleev’s table was really close to being perfect, because his predictions were almost the same as the modern day periodic table. In Mendeleev 's table, grouped with the same chemical properties were put into the same column. In the modern periodic table, there are only seven

Mendeleev didn 't discover some elements so he left gaps in his table, which were filled in later. He knew they were elements are supposed to be in the gap, so he worked out their atomic mass, and predicted the elements properties. Mendeleev had a different periodic law, his law was that the table was set up from increasing atomic mass, certain sets recur periodically. But for sure, there 's no way we would have the periodic table we had today without Mendeleev’s help. The reason that Mendeleev didn 't group his table into atomic mass was because he did not know each element has a unique number of protons. Another difference in Mendeleev’s table is that, he did not include nobel gases. He could not include these gases because he had no clear reason to expect they were missing elements, but the ones he did know existed but had not been discovered, left holes to fill them out later. Mendeleev is to be known by the father of the periodic table because of his contributions to the modern-day table, because there 's no way we would have the same modern-day table without him. The first four elements Mendeleev discovered made up all matter on earth. That is why he is called the father of the periodic table. Even though his table was only categorized by atomic mass, his table was much more successful because of other things. Have you ever noticed that the periodic table gets longer as you go down? This is because as the n