Which of the following scientists contributed to the development of the periodic table of elements?

Question

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All four scientists mentioned (J.W. Döbereiner, Dmitri Mendeleev, H.G.J. Moseley, and J.A.R. Newlands) contributed to the development of the periodic table of elements in some way. Döbereiner was the first to notice patterns in the properties of certain groups of elements, while Newlands proposed the Law of Octaves. Mendeleev is often credited with creating the first widely-accepted periodic table, while Moseley's work led to the modern organization of the periodic table based on atomic number.

Which of the Following Scientists Contributed to the Development of the Periodic