How many electrons are in the outer energy levels of the highlighted group of elements?

To accurately answer your question, I would need to know which specific group of elements you are referring to. However, generally speaking, elements in Group 1 (alkali metals) have 1 electron in their outer energy level, while those in Group 2 (alkaline earth metals) have 2. Groups 13-18 have varying numbers of valence electrons, ranging from 3 to 8, depending on the specific group.