The modern day Periodic Table was put together with the discoveries of many different scientists. A German Chemist, Johann Döbereiner discovered that Barium, Calcium, and Strontium had very similar properties. He but these elements in a group called a triad and organized them according to their masses. Döbereiner discovered that the atomic weight of the middle element in each triad is about equal to the average of the atomic weights of the first and third elements. Lithium, Sodium, and Potassium followed this rule for example. He saw this pattern in several groups of three as well. This was the beginning of trends in the arrangements of elements. Döbereiner also found that the density of t...
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... with the transuranium elements 94 to 102. Seaborg reconfigured the periodic table by replacing the lanthanide series to the bottom of the table. He was later awarded the Nobel Prize in chemistry and element 106 was named after him as Seaborgium in his honor.
The work of many scientists helped us to create our modern day Periodic Table. There have been many changes and modifications from the original Periodic Table created by Mendeléev. However, thanks to Mendeléev he started off with a simple table that has evolved into a complex Periodic Table that scientists use all over the world. We can now access each and every element without trouble because all of the elements are arranged according to their properties. With the new technology and advantages we have in modern times, it is interesting to see if the traditional Periodic Table will change in the future.
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- This chapter talks about the history of the discovery of elements, the encounters of scientists and the contributions of them to give un what we now know as the periodic table. In this periodic table we able to see a very organized grouping of elements both natural and those produced in labs. Before the periodic table there was no order, method or clarity for the elements being discovered. Some like nitrous oxide were at a point used for entertainment purposes rather than exploit the benefits for humans that this element had.... [tags: chemical science, Scheele ]
573 words (1.6 pages)
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1235 words (3.5 pages)
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1020 words (2.9 pages)
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