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Cambridge IGCSE Physics practice

What defines an isotope of an element?

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Show answerThe nucleus revisionRevise the key idea

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The nucleus

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What defines an isotope of an element?.

  1. A.Same number of protons, different number of electrons
  2. B.Same number of protons, different number of neutrons
  3. C.Different number of protons, same number of neutrons
  4. D.Different number of neutrons, different number of protons

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Understanding Isotopes

An isotope is a variant of an element that has the same number of protons but a different number of neutrons. For example, carbon has isotopes such as carbon-12 and carbon-14.

  1. a

    State What is an isotope?

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