Identify the CORRECT orders of ionic or atomic radii from the given options: — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

An anion is larger than the neutral atom, which is larger than the cation; thus $I^- > I > I^+$. $Zr \approx Hf$ is correct due to lanthanide contraction. $P^{3+} > P^{5+}$ is correct because a higher positive oxidation state indicates a smaller radius. $Ti^{4+}$ ($Z=22$, $18e^-$) and $Mn^{7+}$ ($Z=25$, $18e^-$) are isoelectronic; since $Mn$ has a higher $Z$, $Mn^{7+}$ is smaller, meaning $Ti^{4+} > Mn^{7+}$, making option B incorrect.