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

Atomic structure and the Periodic Table — practice question

Atoms of element Q form positive ions. One ion of Q contains $10$ electrons and $14$ neutrons. Which of the following statements is correct?

  • AAn atom of Q has only two occupied electron shells.
  • BQ is a non-metal.
  • CThe atomic number of Q is $10$.
  • DThe mass number of Q is greater than $24$.

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