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For centuries, the chemical elements had been cumulating since the discovery of the first element. Finally, there had been a point of time where scientists began to wonder if there is a pattern that can organize all the elements together. And also, scientists began wonder if any sort of relationship is present among the elements. It was during the 19th century when a number of scientists attempted to organize the elements together.
The earliest attempt in assembling the elements started with Johann Dobereiner. Through his works, he discovered that certain elements can be grouped in threes. The pattern he found in this concept was that the atomic weight of one element of a group is midway between the atomic weights of the other two elements...
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