Chemistry · Periodic Classification
What is a major limitation of Mendeleev's periodic table?
- 1No fixed position could be assigned to hydrogen in the periodic table.✓
- 2Noble gases could be placed in a new group without disturbing the existing order.
- 3It selected hydrogen and oxygen because they are highly reactive and formed compounds with most elements.
- 4It contains vertical columns called groups and horizontal rows called periods.
Correct answer
No fixed position could be assigned to hydrogen in the periodic table.
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