Write the achievements of mendeleev periodic table
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The achievements by Mendeleev were:
•Mendeleev kept some blank spaces in the periodic table for the elements that were yet to be discovered.
Eg:- Eka-aluminium, Eka-boron, Eka-silicon.
•He also predicted properties of some elements which were yet to be discovered.
Eg:- The properties of Eka-aluminium predicted by Mendeleev and those of element gallium were almost the same.
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