One atom of oxygen contains 8 protons, 8 electrons, and 8 neutrons.
Another atom of oxygen contains 8 protons, 8 electrons, and 10 neutrons.
What term is used to describe these two different types of oxygen atoms?
Ions
Isomers
Isotopes
Molecules
41 exam-style questions on OCR GCSE Physics Radioactive emissions. Each one has a worked solution and a mark scheme showing where the marks go.