Physics 0625 · IGCSE · The nuclear model of the atom

The nuclear model of the atom — practice question

Four statements about isotopes of one element are shown below. Which of the statements about the isotopes has to be correct?

  • AThey are radioactive.
  • BThey are unstable.
  • CThey have the same number of neutrons.
  • DThey have the same number of protons.

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