Students at a school in Kingston, Jamaica were studying isotopes. Isotopes of the same element differ in the number of which subatomic particle?

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Question

Students at a school in Kingston, Jamaica were studying isotopes. Isotopes of the same element differ in the number of which subatomic particle?

Accepted Answer

Neutrons — Award 1 mark for identifying neutrons. Isotopes have the same number of protons but different numbers of neutrons. A is incorrect because changing proton number would create a different element. B is incorrect because isotopes of neutral atoms have the same electron number. D is incorrect because nucleons include both protons and neutrons, and only neutron number varies in isotopes.

Answer

Neutrons

Answer

Nucleons

Answer

Electrons

Answer

Protons

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