An atom has a diameter of 0.1 nm0.1\ \text{nm}0.1 nm. A nanoparticle has a diameter of 20 nm20\ \text{nm}20 nm.
How many atoms would fit in a line across the diameter of the nanoparticle?
2
20
200
2000
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.