Magnesium is a 2+ metal, located in the alkaline earth metals group of the periodic table (group 2).
Hi. Your question is quite ambiguous. If the list here follows the periodic table, then I think you are asking for elements 31 to 35. Element 30 is Zinc. This is followed by Gallium (Ga), Germanium (Ge), Arsenic (As), Selenium (Se) and Bromine (Br).
Answer:
Valence electrons. they can be used to determine the group of an element.
Explanation: