Give any 5 advantages and limitations of Mendeleev's periodic table and explain each of them?
advantages of mendeleev`s periodic table-
1. mendeleev`s periodic table was the base for modern periodic table.
2. medeleev left spaces in his periodic table for the elements which were unknown at that time.
3. when the elements unknown at that time were found then they were placed in the gaps without disturbing his periodic table.
4. with his periodic table he could predict the elements which were not known at that time.
5. when noble gases were found they were put separately at the corner in a new group without disturbing the existing table.
disadvantages-
1. the elements were placed in wrong order of ATOMIC MASSES.
2.for example nickel and cobalt were placed in wrong order..