Question

Classification of elements and periodicity in properties short notes and formulas

Answer 1

The periodicity in properties is due to repetition of similar outer shell electronic configuration at a certain regular intervals. In modern periodic table is based on modern periodic law in which elements are arranged in increasing order of their atomic numbers.

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Answer 2

Answer: The periodic function of the particular atomic numbers is defined as the properties of those elements. The repetition of the same number of electronic configuration of the outer shell is defined as the periodicity in the properties of such elements.

In the modern periodic table, the elements are placed according to their atomic numbers in ascending order.