When it comes to atomic structure, it is very important to fully understand it. First, try to understand the basic concepts and terminology of the chapter. Solve all common problems without resorting to solutions. Gradually try to understand the answers to common questions. Then solve the problems and answer the questions in the practice section. Before dealing with a new topic, go back and review what you learned earlier in this chapter. If you have any problems, please contact Mentor for help, if you do, re-read the content, and resolve the problem before leaving. If you understand the whole concept, but the still cannot handle difficult situations, your efforts will be in vain. With this assumption in mind, proceed without solving problems, and focus on complex concepts without distract...