Group 3A, also known as group 13, is located on the right side of the periodic table, where you’ll find elements such as aluminum (Al), gallium (Ga), indium (In), and thallium (Tl). These elements are part of the p-block of the periodic table.
When it comes to the charges of the ions they typically form, elements in Group 3A generally tend to form cations with a charge of +3. For instance, aluminum commonly forms the ion Al3+. This +3 charge occurs because these elements have three electrons in their outermost shell which they can lose to achieve a stable electron configuration.
However, it’s worth noting that some of the heavier elements in this group, like thallium, can also form +1 ions (Tl+) under certain conditions. Overall, the dominant charge for the ions in Group 3A is +3, but it can vary as you move down the group.