Answer
Indicating the number of valence electrons in each of the following:
a. aluminum- 3
b. Group 5A- 5
c. barium- 2
d. F, Cl, Br, and I- 7
Work Step by Step
a. aluminum belongs to 3A group.
b. Group 5A has 5 valence electrons.
c. barium belongs to 2A group.
d. F, Cl, Br and I belong to the 7A group and hence have 7 valence electrons.