During a study of beta decay products, a physicist compares a singly-charged carbon-14 ion (614C+\text{}^{14}_{6}\text{C}^{+}614C+) with a doubly-charged nitrogen-14 ion (714N2+\text{}^{14}_{7}\text{N}^{2+}714N2+).
Which statement correctly describes and compares these two ions?
They are isotopes because they have the same nucleon (mass) number.
They have the same number of electrons and the same number of nucleons.
The carbon ion has fewer neutrons than the nitrogen ion.
They have the same number of protons but a different number of neutrons.
77 exam-style questions on OCR GCSE Chemistry Atomic structure. Each one has a worked solution and a mark scheme showing where the marks go.