Question

explain the demerits of mendelev's periodic table​

Answer 1

Answer:

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.

Answer 2

➡️ Explanation:

Demerits of Mendeleev's Periodic Table : ... 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.