Which statement correctly describes the structure and charges of the particles in an atom?
The nucleus contains positive protons and neutral neutrons, and is surrounded by negative electrons.
The nucleus contains negative electrons and neutral neutrons, and is surrounded by positive protons.
The nucleus contains positive protons and negative electrons, and is surrounded by neutral neutrons.
The nucleus contains neutral protons and positive neutrons, and is surrounded by negative electrons.
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.