Consider the isoelectronic series: . Which of the following statements correctly explains the trend — Periodic Table and Periodicity Chemistry Question
Question
Consider the isoelectronic series: $N^{3-}, O^{2-}, F^-, Na^+, Mg^{2+}, Al^{3+}$. Which of the following statements correctly explains the trend in their ionic radii?
Answer: C
💡 Solution & Explanation
In an isoelectronic series, the electron count is constant (10e-), so the ionic radius is inversely proportional to the nuclear charge ($Z$). Thus, $N^{3-} > O^{2-} > \dots > Al^{3+}$.
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