Which finding led to the modification of Mendeleev's periodic law?

Periodic Classification MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Periodic Classificationchemistry-mcqs › periodic-classification
Published
18 Mar 2019
Last updated
28 May 2026

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Explanation

Moseley's work on atomic numbers provided a more accurate basis for the arrangement of elements, prompting a revision of Mendeleev's periodic law. The other discoveries, while significant, did not directly influence the periodic law's formulation.

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