Answer
D because the 3rd energy level can hold a maximum of 18 electrons.
Work Step by Step
D because the 3rd energy level can hold a maximum of 18 electrons.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.