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2.3 Isotopes

Syllabus
0620–2026–2027
Topic
2.3
Level
—

2.3.1—Isotopes as different atoms of the

  • Define isotopes as different atoms of the same element that have the same number of protons but different numbers of neutrons

2.3.2—Symbols for atoms and ions

  • Interpret/use symbols for atoms and ions, e.g. 12C and 35Cl- notation with mass/nucleon and proton/atomic numbers

2.3.3—Isotopes of the same element have the

  • State: isotopes of the same element have the same chemical properties because they have the same number of electrons and therefore the same electronic configuration

2.3.4—Relative atomic mass of an element

  • Calculate the relative atomic mass of an element from the relative masses and abundances of its isotopes

Objective notes

4 learning objectives
ConceptIGCSE Chemistry