Question

4. Explain the demerits of the Mendeleev’s periodic table using the given points.

a)position of hydrogen b)placing of isotopes c)increasing order of atomic masses​

Answer 1

Answer:

A) A fixed position could not be assigned to Hydrogen in the periodic table

B) Position of isotopes of elements were not certain in the table

C) Atomic masses did not increase in a regular manner in going from one element to the next. So it was not possible to predict how many elements could be discovered between 2 elements

Explanation:

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