Science, asked by devkotaaayush630, 7 months ago

Why was periodic table developed

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Answered by soumyajitsarkar724

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Answered by s52352953

Answer:

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. ... They discovered that beta particles were negatively charged

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