Question

what is periodicity and what's the importance of it۔
in Chemistry ۔​

Answer 1

Answer:

 Periodicity refers to trends or repeating fluctuations in element properties, with rising atomic number. Periodicity is a property of elements that results from regular and predictable changes in their atomic structure.

Importance

This aided scientists in the discovery of new elements because certain features could be expected based on their position in the periodic table. Chemists can use periodicity to forecast how new, super-heavy elements will look and behave.

Explanation:

A group's (column's) elements have comparable properties. The filling of electron shells around the nucleus is reflected in the periodic table's rows (periods), so as a new row begins, the elements stack on top of each other with similar properties.

The electronic configuration of the elements provides the basis for the contemporary periodic table. The electronic configuration of the valence shell of the elements is repeated in such a way that elements with the same valence shell electrons fall under the same group when they are arranged in order of increasing atomic number. They have identical qualities because the number of valence shell electrons is the same.