History of The Periodic Table - Classifying Elements

Classifying Elements

By 1869, a total of 63 elements had been discovered. As the number of known elements grew, scientists began to recognize patterns in the way chemicals reacted and began to devise ways to classify the elements.

Read more about this topic:  History Of The Periodic Table

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History Of The Periodic Table - Classifying Elements - John Newlands
... John Newlands was an English chemist who in 1865 classified the 56 elements that had been discovered at the time into eleven groups which were based on ... Newlands noted that many pairs of similar elements existed which differed by some multiple of eight in mass number ...

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