Question

3. What is priodicity ?​

Answer 1

Answer:

The recurrence of properties of the elements, after a certain regular intervals, when they are arranged in the increasing order of their atomic numbers, is called periodicity.

Answer 2

$\large\mathbb{\underline\purple{ANSWER}}$

$\huge\mathfrak\pink{ ⤷}$ In the context of chemistry and the periodic table, periodicity refers to trends or recurring variations in element properties with increasing atomic number. Periodicity is caused by regular and predictable variations in element atomic structure.