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6.1 Atomic structure and isotopes

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Question 19

Nucleus R contains 17 protons and 18 neutrons.

a.

Calculate the mass number of nucleus R.

[1]
b.

Nucleus S is an isotope of nucleus R. Nucleus S has a mass number of 37.

Calculate the number of neutrons in nucleus S.

[2]
Markscheme

6.1 Atomic structure and isotopes Questions

  1. GCSE
  2. /Physics
  3. /6.1 Atomic structure and isotopes

103 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.

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