February/March 2026 Paper 22

2026 · 40 questions · 40 parts · 40 marks

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34Nuclear Model AtomMedium1 mark
The diagram shows the scattering of -particles by gold foil.
an alpha-particle source firing particles through a slit at gold foil inside a cylindrical fluorescent screen; most particles labelled 1 pass straight through undeflected, while a few labelled 2 are deflected back at large angles
Two observations from the experiment are labelled 1 and 2. They are evidence for the structure of the atom. Which conclusion is correct?