What did Henry Moseley's work demonstrate about atomic number and atomic mass?

Question

What did Henry Moseley's work demonstrate about atomic number and atomic mass?, Atomic number and atomic mass are unrelated., Atomic mass is more fundamental than atomic number., Atomic number is a more fundamental property than atomic mass., Atomic number and atomic mass are equal for all elements.

MARKS App · Accepted Answer

Henry Moseley showed that the atomic number is a more fundamental property of an element than its atomic mass.A plot of √v (where v is frequency of X-rays emitted) against atomic number (Z) gave a straight line and not the plot of vs atomic mass. He thereby showed that the atomic number is a more fundamental property of an element than its atomic mass

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