Physics 9702 · AS & A Level · Atoms, nuclei and radiation

Atoms, nuclei and radiation — practice question

The thickness of a sheet of gold leaf is $0.125\,\mu\text{m}$. A gold atom has a radius of $174\,\text{pm}$. About how many atomic layers are present in the sheet?

  • A4
  • B7
  • C400
  • D700

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