Question

using the model and a periodic table, answer the following questions.
9 what period does this element belong in on the periodic table?
bohr model
6
4
3
7
5
1
2

Explanation:

In the periodic table, the period number of an element is equal to the number of electron shells in its atom. By counting the electron shells in the Bohr model (the concentric circles), we can determine the period.

Answer:

B. 4