Which one is not the fault of Mendeleev's periodic table.
- Position of hydrogen is not fixed.
- Position of isotope is not fixed.
- Position of Lanthanides and actinides are not found.
- Position of sodium is not fixed.
1 Answer
The correct answer is option D (Position of sodium is not fixed).
D is the correct answer because in Mendeleev's periodic table, the position of sodium was fixed.
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