When an element has three electrons in its outermost energy level, it is likely to lose those electrons in order to achieve a more stable electron configuration. This process typically occurs in elements that are metals, particularly in groups 13 of the periodic table. By losing three electrons, the element will have a net positive charge.
Therefore, the ion formed from this element would most likely have a charge of +3. This is because the loss of three negatively charged electrons results in an overall positive charge on the ion.