Question

explain the drawbacks of Mendeleev periodic table and newlands periodic table​

Answer 1

Explanation:

John Newlands law of octaves arranged all the elements known at the time into a table in order of relative atomic mass. When he did this, he found that each element was similar to the element eight places further on.This repeating or periodic pattern of properties had problems.

Answer 2

Answer:

LIMITATIONS OF Mendeleev's Periodic Table : Position of Hydrogen => Position of hydrogen in the perodic table is Uncertain , Because hydrogen is placed in 1 A group with Alkali metals . Position of isotopes => isotopes haven't been given separate place in perodic table