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CAIE IGCSE Chemistry: Isotope Chemical Properties Question Bank

Practise linking isotope definitions to electron arrangements so you can justify why isotopes react in the same chemical way.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • explain identical chemical properties by referring to the same electronic configuration
  • distinguish isotope statements about neutrons, protons, mass numbers and outer-shell electrons
  • choose the statement that links same chemical reactions to the same number of outer electrons

2.3.3—Isotopes of the same element have the question 1

[Maximum number: 1]

Sulfur is a Group VI element.

A sample of sulfur contains two isotopes, 32 S{ }^{32} \mathrm{~S} and 34 S{ }^{34} \mathrm{~S}.

State why these isotopes have identical chemical properties.

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