How did Mosley's work on atomic numbers show that atomic number is a fundamental property better than atomic weight??

How did Mosley's work on atomic numbers show that atomic number is a f

1.	How did Mosley's work on atomic numbers show that atomic number is a fundamental property better than atomic weight??
Answer» seley's CONTRIBUTION the Periodic Law can be restated: Similar properties recur periodically when elements are arranged according to INCREASING ATOMIC NUMBER." Atomic numbers, not weights, determine the factor of chemical properties. please MARK me brilliant