Elements that are in the same group have similar characteristics such as melting points and reactivity. Group 2 are alkaline earth metals that share such characteristics. Select the statement which is true of group 2 . All elements in the same group have the same number of subatomic particles. Element in the same period also have similar characteristics. Elements in a different group would all share similar characteristics that are different from Group 2 .

To determine which statement is true regarding Group 2 elements (alkaline earth metals), let's analyze each statement: 1. **All elements in the same group have the same number of subatomic particles.** - This statement is false. While elements in the same group have similar chemical properties, they do not have the same number of subatomic particles. Each element has a different atomic number, which means they have different numbers of protons, neutrons, and electrons. 2. **Elements in the same period also have similar characteristics.** - This statement is misleading. While elements in the same period may show some trends (like increasing atomic size or electronegativity), they do not necessarily have similar characteristics. Elements in the same group are more likely to share similar properties. 3. **Elements in a different group would all share similar characteristics that are different from Group 2.** - This statement is somewhat vague. While elements in different groups do have different properties, it is not accurate to say that they all share similar characteristics. Each group has its own unique properties. Based on this analysis, none of the statements are entirely true. However, the closest to being correct is the third statement, as it acknowledges that elements in different groups have different characteristics compared to Group 2. If you need a definitive true statement about Group 2, it would be that elements in the same group (Group 2) share similar characteristics, but that is not one of the options provided.