Demerits of Mendeleev\'s law?

1.	Demerits of Mendeleev\'s law?
Answer» Most wlcm Thank you ?both of you 1. Elements of higher atomic mass were placed before elements of lower atomic mass.☺️☺️ Demerits of Mendeleev\'s Periodic Table :(a) Mendeleev arranged elements in the ascending order of their atomic masses. There was no fixed position for hydrogen in his periodic table, as it resembled alkali metals as well as halogens.(b) Elements of higher atomic mass were placed before elements of lower atomic mass. Cobalt with atomic mass\xa058.93\xa0was placed before nickel with atomic mass\xa058.71.(c) Elements having different properties were placed in the same sub group like manganese\xa0(Mn)\xa0was placed with halogens which had totally different properties

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