Question

state the merits and demertis of mendeleev's periodic table ​

Answer 1

Answer:

Merits of Mendeleev's Periodic Table:

⋅ Mendeleev was first to properly arrange and classify all elements and was able to explain the periodicity in their chemical properties.

⋅ Mendeleev left some gaps for undiscovered elements. He predicted that some elements would be discovered in future. He also predicted properties of those undiscovered elements.

Demerits of Mendeleev's Periodic Table:

⋅ Position of hydrogen was not justified.

⋅ Increasing order of atomic mass could not be maintained throughout the table.

⋅ There is no place for isotopes.

Explanation:

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