Question

write demerits of mendeleev's periodic table​

Answer 1

Answer:

Mendeleev's periodic table on the basis of atomic mass

I hope I helps you

plz mark to brainlest

Answer 2

Answer:Demerits of Mendeleev's periodic table is as follows:

1). Isotopes isotopes of all elements and are not present in mendeleev periodic table.

2). it it was based on atomic masses of elements.

3). It was not possible to predict that so many elements would be discovered this between two elements.

4). atomic atomic masses do not increase in regular manner in going from one element to another.

5). no fixed position could be given to hydrogen in mendeleev periodic table because it possesses properties of both halogens and alkali metals.

6). causes causes of periodicity could not be explained by mendeleev.

7). elements with atomic mass were placed before the elements having low atomic mass.

8). lanthanoides were not given proper place.

9). elements elements with different properties were placed together (like Na, Li, Ag, Cu).

10). elements with same properties were placed in different groups.

HOPE IT HELPS