WHAT ARE THE ACHIEVEMENTS OF MENDELEEVS PERIODIC TABLE?
Achievements of the Mendeleev's periodic tables are as under:-
1) Systematic study of elements:-
As the elements having same properties are grouped together so it becomes very useful to remember the properties of large number of elements in a systematic way.
2) Prediction of new elements:-
Mendeleev predicted the properties of those missing elements from the known properties of the other elements in the same group. On the basis of this, he named Gallium as Eka-Almunium, Germanium as Eka-Silicon and Scandium as Eka-Boron.
3) Correction of atomic mass:-
Atomic mass of beryllium was corrected from 13.5 to 9. Atomic mass of indium, gold and platinum were also corrected.