How could the modern periodic table remove various anomalies of Mendeleev’s periodic table?


1.      How could the modern periodic table remove various anomalies of Mendeleev’s periodic table?
Ans.
i.        A periodic table is a tabular arrangement of elements such that the elements can be classified on the basis of their common properties.
ii.      Properties of elements are related to their electronic configuration which in turn depends on their atomic numbers.
iii.    In the modern periodic table, the elements are arranged in the ascending order of their atomic numbers such that the elements having similar properties fall in the same group.
iv.     This arrangement removed various anomalies of Mendeleev’s periodic table which depended on atomic masses of the elements.