Question

what group would this element be in?

Explanation:

Step1: Count the valence electrons

Valence electrons are the electrons in the outermost shell. Looking at the electron - shell diagram, we count the electrons in the outermost shell. There are 5 valence electrons.

Step2: Relate valence electrons to group number

In the periodic table (for main - group elements), the group number (for groups 1 - 2 and 13 - 18) is related to the number of valence electrons. For groups 13 - 18, the group number is equal to the number of valence electrons plus 10. Since there are 5 valence electrons, the group number is \(5 + 10=15\)

Answer:

Group 15