An architect designs a circular courtyard to represent an atom. The 8 m radius of the courtyard represents the distance from the centre of the nucleus to the outermost electrons.
The nucleus represented has a radius of about 1 × 10-14 m.
A marker at the centre of the courtyard will represent the nucleus, drawn to the same scale.
Use the scale of the courtyard and your knowledge of the typical radius of an atom to estimate the radius of the marker.
0.08 mm
0.8 mm
8 mm
80 mm
101 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.