Chemistry 5070 · O Level · Atomic structure and the Periodic Table

Atomic structure and the Periodic Table — practice question

Which statement concerning the particles $^{19}_{9}\text{F}^-$, $^{20}_{10}\text{Ne}$ and $^{23}_{11}\text{Na}^+$ is correct?

  • AThey all contain more electrons than protons.
  • BThey all contain more neutrons than protons.
  • CThey all contain the same number of electrons.
  • DThey all contain the same number of protons.

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