Answer:
True
Step-by-step explanation:
Let's take examples. Hydrogen and helium are in the first row because they have a total of one energy levels each due to the configuration of H: 1 and He: 2.
Sodium is in period three because that it has three energy levels carrying atoms. Look at the following configurations
Na:2, 8, 1. S: 2,8,6 . Both elements are in period/row three and they both have three energy levels