Using the location of the element on the Periodic Table, tell how each element below will fill its outer energy level and achieve a stable electron configuration in an ionic bond.

1.
How will Indium (In) achieve a stable electron configuration?:

a.It will lose 1 valence electron.
b.It will lose 2 valence electrons.
c.It will gain 1 valence electron.
d.It will lose 3 valence electrons.
e.It will gain 3 valence electrons.
f.It will gain 2 valence electrons.

Indium (In) is located in Group 13, which means it has 3 valence electrons. To achieve a stable electron configuration, it would need to lose 3 valence electrons. Therefore, the correct answer is option d. It will lose 3 valence electrons.