How is modern periodic table better than mandleev's periodic table. state the drawbacks( If any) present in modern periodic table.
Answers
Mendeleev realized that the physical and chemical properties of elements were related to their atomic mass in a 'periodic' way, and arranged them so that groups of elements with similar properties fell into vertical columns in his table. ... And when they were discovered, Mendeleev turned out to be right.
Hiiiiiii...........
Kem cho?
Ok . Now see.
In Mandleev's table,the isotope were not placed. Becoz, it isotopes were having same atomic no. but different atomic mass no. And Mandleev's table was arranged on ''increasing order of atomic mass''.
In modern periodic table, It was arranged in increasing order of atomic no. not atomic mass no.
So problems of isotope was resolved.
Drawback of modern periodic table:
Hydrogen resembles both the alkali metals and halogens But it has been placed with the alkalis.