Differentiate between the arrangement of elements in Mendeleev’s periodic table and Modern periodic table.
|Mendeleev’s Periodic Table||Modern Periodic Table|
|Elements were arranged according to the increased atomic masses.||Elements were arranged according to increased atomic numbers.|
|Position of isotopes was not justified in Mendeleev’s periodic table.||There was no problem in placing of isotopes.|
|Hydrogen resembles both with alkali metals and halogens, and therefore, position of hydrogen was not justified.||Hydrogen has been given a unique position due to its resemblance with alkalis and halogens.|