Question

The modern periodic table has been evolved through the early attempt of Dobereiner, Newland, and Mendeleev.list one advantage and one limitation of the three attempts.

Answer 1

During Dorbereien's time he created the mordern periodic table which is used now before it was Mendeleev's which did not arrange things in atomic no. but in atomic mass which created problems. The limitation of the the mordern periodic table can have one element in each block and the rest have to be put in another periods.
And Newland's table only checked physicality of the elements