What is the highest energy level of magnesium?
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                With an atomic number of 12, magnesium possesses 12 electrons, which are arranged in distinct energy shells. Understanding these electron shells is key to answering what is the highest energy level of magnesium, which corresponds to the location of its outermost electrons. These outer electrons are the primary drivers of an element's chemical behavior, determining how it interacts with other atoms.