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NEETChemistryClassification of Elements and Periodicity in Properties

Why did Mendeleev propose leaving gaps in his periodic table?

Options

  1. ABecause he believed the order of atomic weights was incorrect.
  2. BBecause he wanted to make the table look more organized.
  3. CBecause he didn't know about those elements.
  4. DBecause he wanted to confuse other scientists.

Correct answer

A. Because he believed the order of atomic weights was incorrect.

Step-by-step solution

Mendeleev proposed leaving gaps in his periodic table because he believed the order of atomic weights might be incorrect.

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