What element in period 4 is expected to have a charge of plus 3 when it forms compounds?

The element in period 4 that is expected to have a charge of plus 3 when it forms compounds is gallium (Ga). Gallium typically loses three electrons from its outer shell, resulting in a +3 oxidation state. This behavior is commonly observed in its compounds, such as gallium oxide (Ga2O3) and gallium chloride (GaCl3).