who was dobenieer explain his periodic table
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Explanation:
In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them.
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Answer:
Doberiner was the first scientist to take a step to classify the elements
Explanation:
He classified elements in form of triads . He also added that in a triad the atomic mass of the middle element is roughly the average of the other two .
Limitations
He could identify only three triads at that time
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