Physics · Periodic Classification of Elements

Which one of the following statements regarding Dmitri Mendeleev is incorrect?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1He developed and formulated the Periodic Law based on atomic weights.
2The element with atomic number 101 (Mendelevium) is named after him.
3At the time he proposed his Periodic Table, the internal structure of the atom was fully known.✓
4He authored the famous textbook 'Principles of Chemistry'.

Correct answer

At the time he proposed his Periodic Table, the internal structure of the atom was fully known.

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