What are the two drawbacks of mandeleeve what are the two drawbacks of

1.	What are the two drawbacks of mandeleeve what are the two drawbacks of modern periodic table
Answer» In Mendeleev's PERIODIC table there were gaps for undiscovered ELEMENTS. MODERN periodic table MAINTAINS uniformity. In Mendeleev's periodic table noble gases were not placed (as they are not discovered at that time). In Modern periodic table noble gases in a seperate GROUP named as group-18.

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