Question

what were the drawbacks of mandelevs periodic table​

Answer 1

Answer:

isotopes were discovered long after Mendeleev's periodic table . He could not assign a correct position to hydrogen in his table. Another problem was that the atomic masses do 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 two elements especially when we consider the heavier elements.

Explanation: