The above statement is False.

Mendeleev’s periodic law states that when the elements are arranged in the increasing order of their atomic masses, the elements with similar properties recur at regular intervals. No fixed position was given to hydrogen because it resembled alkali metals as well as halogens. 'Calcium' is present at a fixed position in group II.

The correct statement would be, Mendeleev’s periodic table could not justify the position of Hydrogen.