Question

list two advantages of mendeleev's classification

Answer 1

Advantage of Mendeleev Periodic Table :-
1.He left blank  Places which help scientist to discover new element
2.When Noble gasses was discovered Hel could add  it to periodic table without any major changle 
3.He predicted the property of new element 

Answer 2

1.He left blank places which help scientist to discover new elements

2.when noble gasses was discovered Hel could add it to periodic table without an major change