This problems and solutions manual is intended as a companion to an earlier textbook, Modern Atomic and Nuclear Physics (Revised Edition) (World Scientific, 2010). This manual presents solutions to many end-of-chapter problems in the textbook. These solutions are valuable to the instructors and students working in the modern atomic field. Students can master important information and concept in the process of looking at solutions to some problems, and become better equipped to solve other problems that the instructors propose.