Question

Who found that atomic number is fundamental property of element and should be the basis for Modern periodic law.

Answer 1

Dimitri Mendeleev







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Answer 2

Henry Moseley

Explanation:

Henry Moseley gave the modern periodic law in which he stated that the physical and chemical properties of an element are the periodic functions of its atomic number. He gave us the the Modern Periodic Table in which he rectified the defects of the Mendeleev's classification where he considered atomic mass. The period table demonstrates that the elements exhibit a periodic repetition of their chemical and physical properties.