Home » Number of protons, neutrons and electrons in the element 89X231 is Atomic Structure MCQs Number of protons, neutrons and electrons in the element 89X231 is January 8, 2022 14 Views Q. Number of protons, neutrons and electrons in the element 89X231 is A. 89, 89, 242 B. 89, 142, 89 C. 89, 71, 89 D. 89, 231, 89 Answer: 89, 142, 89