What were the limitations of Dobereiners classification?
The limitation of Doberenier's classification was that it failed to arrange all the then known elements in the form of triads of elements having similar chemical properties. Doberenier could identify only three triad
(i.e. The alkali metal group, the alkaline earth metal group and the halogen group) from the element known at that time. So, his classification of elements was not much successful.