Physics 9702 · AS & A Level · Atoms, nuclei and radiation

Atoms, nuclei and radiation — practice question

The four nuclei are shown here. $^{{28}}_{{14}}\text{E}$, $^{{25}}_{{15}}\text{G}$, $^{{25}}_{{12}}\text{M}$, $^{{24}}_{{13}}\text{Q}$ Which of the following statements about these nuclei is correct?

  • AAn uncharged atom of element Q has 24 orbital electrons.
  • BNuclei G and M are isotopes of the same element.
  • CWhen E absorbs a neutron and then emits an $\alpha$-particle, E transforms into M.
  • DWhen M emits a $\beta^-$ particle, M transforms into Q.

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