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JEE Main202122 Jul 2021Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Which one of the following statements for D.I. Mendeleeff, is incorrect ?

Options

  1. AHe authored the textbook - Principles of Chemistry.
  2. BAt the time, he proposed Periodic Table of elements structure of atom was known.
  3. CElement with atomic number 101 is named after him.
  4. DHe invented accurate barometer.

Correct answer

B. At the time, he proposed Periodic Table of elements structure of atom was known.

Step-by-step solution

At the time, he proposed the periodic table but structure of atom was unknown.

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