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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements2 Marks
Question
State the periodic law on which Mendeleev’s periodic table was based. Why and how was this periodic law changed?
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Answer

According to Mendeleev’s periodic law:The properties of elements are a periodic function of their atomic masses. It was the discovery of atomic number which led to a change in Mendeleev’s periodic law which was based on atomic mass.

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