Question

How could the modern periodic table remove the anomalies of mendeleev periodic table give two examples?

Answer 1

1) Isotopes were given a fixed position

2)Hydrogen was given a place

3)In mendeleev's periodic table, some element having higher atomic mass, were ahead of  element having lower atomic mass.

4)Mendeelev's periodic table was based on atomic mass, so it difficult to find out how many elements were present between two elements.