Question

2) What are periods in a periodic table? What is meant by period number? What does it signifies?​

Answer 1

Answer:

periodic number is atomic number .

Explanation:

atomic no. - number of protons present in element.

Answer 2

Answer:

The horizontal rows in a Periodic Table are known as periods.

The periodic number or atomic number is the number of protons in the nucleus of every atom of that element .

It helps people identify elements according to the number of protons one atom of that element has. Hope it helps you sis.