Question

how could the modern periodic table remove the various anomalies of Mendeleev periodic table​

Answer 1

Answer:

When the elements are arranged according to their atomic numbers on the basis of modern periodic law, all the anomalies  of Mendeleev's classification disappear. For example, Position of isotopes: All the isotopes of an element have the same number of protons, so their atomic number is also the same.

Answer 2

Answer:

it gives a better and easier check for elements.