Question

First scientist who first of all show the atomic number of an element is more fundamental property than atomic mass

Answer 1

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Here is your answer
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☆ "HENRY MOSELAY" is the first scientist who all show the atomic number of an element is more fundamental property than atomic mass.

☆He is best known for the Moseley’s Law and contributions to Physics.

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Answer 2

Henry Moseley
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Henry Moseley is a first scientist to show the atomic number of an element is more fundamental property than atomic mass
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1) He is one of the greatest scientists in Physics

2) He was a Physicist

3) He was born in England 

4) He was born on 23 November 1887