Question

state the demerits of mendeleevs periodic table on following point s
a) Ambiguity in position of elements​

Answer 1

Explanation:

hydrogen could not be asigned a proper position beacuse it cam gain electron and form hydride and also lose electron and forms hallide

Answer 2

Answer:

Demerits of Mendeleev's periodic table:

•Hydrogen resembles alkali metals and halogens. So, a correct position could not be assigned to hydrogen in the periodic table.

•The position of isotopes could not be explained.

•At certain places, an element of higher atomic mass has been placed before an element of lower atomic mass.