Because of this, Henry Moseley completed the developing periodic table. Because of this experience he found out that some chemicals go against completely atomic number and they created perfect straight line by that. Beside that, he conducted experiment by firing x ray gun to some samples of the elements. These chemicals are iodine, tellurium and many more. 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. Mendeleev saw it right away but the reason why some are exceptions were not known until Henry Moseley found it out. The order of the periodic table is not always following order. By now it gets easier to classify elements such as metal or non metal because of his periodic arrangement.
He observed that certain atomic weights hold certain characteristics that elements with similar atomic weight tend to have a pattern.Īfter that he drew the pattern periodically and drew the line that connects the dot of the particular elements with similar atomic weight. Lothar Meyer worked with Dmitri Mendeleev to create the first periodic table. His law of octave is that every of the element will have pattern of behaviour from each 8 elements row.Īnother chemist who contributed to the development of periodic table is Julius Lothar Meyer. He himself is a prominent English chemist with his law of octaves.įor a boy who was home schooled instead of going to regular school, Newlands already showed a keen interest of chemistry. Thus, he then created atomic number based on the properties and atomic weight of the element. When he observed the discovered elements, he noticed that there is pattern based on the atomic weight of each element. John Newlands is English chemist who discovered the atomic number based on the atomic weight. After that he attempted to classify the elements and created his first periodic table. 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.
The first created periodic table was in 1863 where there were 56 discovered elements. 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. He is a Russian chemist who first forumlated Periodic Law. The first chemist who designed periodic table is Dmitri Mendeleev.
0 kommentar(er)
