MODERN PERIODIC LAW
In 1913 , British physicist Henry Mosley succeeded to reveal a relationship between properties and atomic numbers of elements and introduced modern periodic law which states as :
" The physical and chemical properties of elements are the periodic function of their atomic numbers. "
The modern periodic law provided a logical and scientific ground for the classification of elements.This law also provided justification for correcting the position of some elements wrongly placed in Mendeleev's periodic table.Periodic law was originally an empirical approach to express periodicity of elements with increasing atomic number , but with further development in atomic structure periodic law was related as :
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