Question

Do elements in the same group have same principle number?

Answer 1

Yes

Step-by-step explanation:

The atomic number never changes because the number of protons for na elecment never change and if they do, they trn into a neww element

Answer 2

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.