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CAIE IGCSE Physics Nuclide Notation

Practise constructing nuclide symbols from isotope names or proton and neutron counts, placing nucleon number upper left and proton number lower left.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • place nucleon number A at the upper left and proton number Z at the lower left of the symbol
  • calculate A by adding protons and neutrons before writing the complete nuclide notation

5.1.2.4—Nuclide notation A ZX question 1

[Maximum number: 1]

The chemical symbol of the element lithium is Li . The proton number of lithium is 3 .
Fig. 9.1 is a representation of a nucleus of a radioactive isotope of lithium that is about to decay.

Fig. 9.1

Fig. 9.1

Write down, using nuclide notation, the symbol that represents this isotope of lithium.

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