Question

Limitations of Mendellev's Periodic Table ????​

Answer 1

Answer:

a.Position of Hydrogen => Position of hydrogen in the perodic table is Uncertain , Because hydrogen is placed in 1 A group with Alkali metals .

b.Position of isotopes => isotopes haven't been given separate place in perodic table .

c.Cause of periodicity => Mendeleev could not explain the cause of periodicity .