Question

How does mendalian periodic table helpful in preparing modern periodic table

Answer 1

Answer:

For your kind information Mendel is not a chemist. He is a biologist  who crossed pea plants for studying heredity.

I think you are talking about Mendeleev's Periodic Table

Please don't get confused between Mendel and Mendeleev in exams.

Mendeleev went even further. He corrected the known atomic masses of some elements and he used the patterns in his table to predict the properties of the elements he thought must exist but had yet to be discovered. He left blank spaces in his chart as placeholders to represent those unknown elements.