Chlorine has two isotopes, 1735Cl{}^{35}_{17}\mathrm{Cl}1735Cl and 1737Cl{}^{37}_{17}\mathrm{Cl}1737Cl.
Atoms of both isotopes can form chloride ions, Cl−\mathrm{Cl^{-}}Cl−.
Which statement about 35Cl−{}^{35}\mathrm{Cl^{-}}35Cl− and 37Cl−{}^{37}\mathrm{Cl^{-}}37Cl− ions is correct?
They have the same number of electrons but different numbers of neutrons.
They have the same number of neutrons but different numbers of electrons.
They have different numbers of protons and different numbers of electrons.
They have the same number of protons, neutrons and electrons.
51 exam-style questions on OCR GCSE Chemistry 1.2 Atomic structure, covering 1.2.1 Development of the atomic model, 1.2.2 The nuclear model and the size of atoms, and 1.2.3 Subatomic particles in atoms and ions. Each one has a worked solution and a mark scheme showing where the marks go.