Periodic table is the essential table in chemistry where it holds the list of chemicals in basic. The creation of periodic table took a long history. It is because each element discovered by different chemist. The periodic table has the chemicals or elements in ordered atomic number.
Usually the metal compounds are on the left while the non-metal compounds are on the right side of the periodic table. The arrangement of periodic table also helps to connect the relationship of each elements. Thus, who are chemists who contributed in the development of the periodic table? Here is the list of them.
- Dmitri Mendeleev
The first chemist who designed periodic table is Dmitri Mendeleev. He is a Russian chemist who first forumlated Periodic Law. When he first saw some of the discovered chemicals, he decided to create a better table to classify those elements into a more coherent table.
The first created periodic table was in 1863 where there were 56 discovered elements. At the very first he was just trying to write a text book for his students when he realized that there is pattern between the elements. After that he attempted to classify the elements and created his first periodic table.
- John Newlands
John Newlands is English chemist who discovered the atomic number based on the atomic weight. When he observed the discovered elements, he noticed that there is pattern based on the atomic weight of each element. Thus, he then created atomic number based on the properties and atomic weight of the element. He himself is a prominent English chemist with his law of octaves.
For a boy who was home schooled instead of going to regular school, Newlands already showed a keen interest of chemistry. His law of octave is that every of the element will have pattern of behaviour from each 8 elements row.
- Julius Lothar Meyer
Another chemist who contributed to the development of periodic table is Julius Lothar Meyer. Lothar Meyer worked with Dmitri Mendeleev to create the first periodic table.
He discovered thing that Newland also found by finding the pattern of the existing chemical elements. His theory of classifying chemical is by making graphic with atomic number as the ordinate.
The result is that the peak of the electro positive performance is because of the atomic weight. By him finding this, he perfected the periodic table relation. For his extensive contribution to the chemistry especially in the development of periodic table, he received Davy Medal.
- William Ramsay
As stated before about the chemists who contributed in the development of the periodic table , the elements included in the periodic table are according to the ones discovered by chemists thus it can change anytime. William Ramsay is the one who found another group of chemicals. Later one, he included them on the periodic table. What he discovered are noble gases.
Gases were rare case of discovery because of its unapparent nature. But with his way of isolating argon and other chemicals, he successfully created new section in the current periodic table. This marks him as one of the most influential chemist. His discovery also leads him prize of Nobel in chemistry that further prove him to be excellent chemist.
Also read: Monatomic Gas Definition – Noble Gas, Monatomic Ion, and Formula
- Alexandre Emile Beguyer de Chancourtois
Chancourtois is a French chemist who contributed to the significant development of periodic table. His specialization was once a geologist but life took turn in which he became interested in chemistry.
He observed that certain atomic weights hold certain characteristics that elements with similar atomic weight tend to have a pattern.
After that he drew the pattern periodically and drew the line that connects the dot of the particular elements with similar atomic weight. By now it gets easier to classify elements such as metal or non metal because of his periodic arrangement.
- Henry Moseley
The order of the periodic table is not always following order. Mendeleev saw it right away but the reason why some are exceptions were not known until Henry Moseley found it out. Based on Royal Society of Chemistry, Moseley found out that some elements do not follow the pattern based on the atomic numner and atomic weights.
These chemicals are iodine, tellurium and many more. Beside that, he conducted experiment by firing x ray gun to some samples of the elements. Because of this experience he found out that some chemicals go against completely atomic number and they created perfect straight line by that. Because of this, Henry Moseley completed the developing periodic table.
- Glenn Seaborg
Glenn Seaborg is a prominent American chemist who once part of Manhattan project.
The reason of recruiting is due to him being the discoverer of neptunium that later also beneficial in the creation of atomic bomb. Because of his discovery, he added to the periodic table of actinides group.
Later on he also contributed to the theory of atomic explosion which make him a famous chemist. For his contribution in chemistry, the element of 106 later gets renamed as seaborgium. This element is the only one named after human. Related to Chemists Who Worked on The Manhattan Project.
Conclusion
The development of periodic table is sure taking time. The reason why is because scientists keep discovering elements and the richer the elements, it means more change to the periodic table. Nonetheless, since the pattern is successfully discovered by the chemists above, it is a big step of advancement toward the future of chemistry.
There will be more upcoming science development regarding the development of chemical elements as more scientists conduct experiment and research. Those chemists who contributed in the development of the periodic table. That is all about chemists who contributed to the development of periodic table.
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