What is meant by Periodic Law as it pertains to the Periodic table of
element?

The Periodic Law states that the physical and chemical properties of the elements recur in a systematic and predictable way when the elements are arranged in order of increasing atomic number. Many of the properties recur at intervals.

You know how the first one if filled up like the objects do the same but with the other categories

B"hf and f-"  is the correct answer took the test on edgenuity and got it right