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.

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achievements of mendeleev's periodic table:

1. he could predict the properties of some elements which were not present at that time.

2. noble gases could be accomodated in a separate column.

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