Question

what is a period in the periodic table how do atomic structure change in a period with an increase in atomic number​

Answer 1

Explanation:

A period in a Periodic Table is a row of of chemical element. in a Periodic Table period have the same number of electrons shells . going across left to right in a period the number of photons increases show the number of nuclear charges increases

Answer 2

Answer:

In the modern periodic table, there are 7 horizontal rows called periods.

While moving across a period, the atomic size decreases due to an increase in nuclear charge, which tends to pull the electrons closer to the nucleus.