Which of the following groups has a +3 charge?

The group that has a +3 charge is the group known as IIIA, also referred to as Group 13 in the periodic table. Elements in this group typically have three valence electrons, and when they form compounds, they usually lose these three electrons to achieve a full outer shell, resulting in a +3 oxidation state.

For instance, aluminum, which is a member of Group IIIA, commonly exists in the +3 oxidation state when it forms compounds, such as aluminum oxide (Al2O3). This characteristic of readily losing three electrons to obtain stability is what defines the +3 charge for this group.

The other groups listed do not typically exhibit a +3 charge. Group III, for instance, contains a range of elements with varying oxidation states, but it does not specifically designate a +3 charge as a hallmark. Group IVA contains elements that can have multiple oxidation states but is more commonly associated with +4 or -4 charges. Group IB, associated with transition metals like copper and gold, also tends to vary widely in their oxidation states, with no predominant +3 characteristic. Thus, IIIA is the correct identification of the group that predominantly shows a +3 charge.