A model of a silicon nanoparticle has a diameter of 42 nm42\ \text{nm}42 nm. It represents 350 atoms placed end to end across that diameter. What diameter does the model assign to one atom?
0.012 nm0.012\ \text{nm}0.012 nm
0.12 nm0.12\ \text{nm}0.12 nm
8.3 nm8.3\ \text{nm}8.3 nm
14 700 nm14\,700\ \text{nm}14700 nm
104 exam-style questions on AQA GCSE Chemistry 2.4 Bulk and surface properties of matter including nanoparticles, covering 2.4.1 Sizes of particles and their properties and 2.4.2 Uses of nanoparticles. Each one has a worked solution and a mark scheme showing where the marks go.