What is the limitation of madeleev parodic table?

1.	What is the limitation of madeleev parodic table?
Answer» Mendeleev’s Periodic TableLimitation: No fixed position for hydrogen \tNo fixed position could be assigned to hydrogen in the Periodic Table.\tIsotopes discovered long after Mendeléev periodic classification of\telements imparted a challenge to Mendeleev’s Periodic Law.\tThe atomic masses of elements did not increase in a steady manner while going from one element to other which made it difficult to predict the number of elements that could be discovered between two elements.

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