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1.2 Atomic structure

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Question 22

An imaging instrument can distinguish a feature only if the feature has a diameter of at least 5 × 10-11 m.

A scientist uses the instrument to examine a sample containing typical atoms. The scientist claims that the instrument can distinguish both the whole atoms and their nuclei.

Take the radius of a nucleus to be 1 × 10-14 m.

Estimate how many times larger or smaller than the smallest diameter the instrument can distinguish a whole atom and a nucleus each are. Use the typical radius of an atom.

Use your estimates to decide whether the scientist's claim is correct.

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Markscheme

1.2 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 Atomic structure

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.

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