what are the limitation’s of mendellev’s classification?
The limitations of Mendeleev’s classification are:
-The explanation for position of hydrogen was well reasoned by him.
-Position of Isotopes: Elements having same atomic number but different atomic masses are known as isotopes. Although isotopes were discovered after Mendeleev, but it became a challenge to accommodate those isotopes in Mendeleev’s Periodic Table without disturbing the order of elements.
-Wrong Order of Elements: Mendeleev placed many elements in wrong order of their increasing atomic masses in order to place elements having similar properties in similar group.