Question

(29) a) State modern periodic law​

Answer 1

$\huge\tt\colorbox{pink}{Answer}$

Modern period law :

The physical and chemical properties of elements are the periodic functions of their atomic number.

Answer 2

Answer:

Modern periodic law states that:

'The properties of elements are a periodic function of their atomic numbers.'

Explanation:

It was found that atomic number was a more fundamental property for classifying elements rather than atomic mass as it eliminated all the anomalies of Mendeleev's classification, when increasing order of atomic numbers was used to classify elements. Therefore, Mendeleev's periodic law was modified to the modern periodic law.

Hope it helps!!