For Na⁺, Mg²⁺, Al³⁺ and F⁻, the CORRECT order of ionic radii is · ABC26IN0777
Subject: Inorganic Chemistry · Chapter: Periodic Properties · Topic: Periodic Properties – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Hard
For $\mathrm{Na}^{+}, \mathrm{Mg}^{2+}, \mathrm{Al}^{3+}$ and $\mathrm{F}^{-}$, the CORRECT order of ionic radii is
(a)$\mathrm{Al}^{3+}>\mathrm{Mg}^{2+}>\mathrm{Na}^{+}>\mathrm{F}^{-}$
(b)$\mathrm{Al}^{3+}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}>\mathrm{F}^{-}$
(c)$\mathrm{Na}^{+}>\mathrm{F}^{-}>\mathrm{Mg}^{2+}>\mathrm{Al}^{3+}$
(d)$\mathrm{F}^{-}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}>\mathrm{Al}^{3+}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
Isoelectronic ions shrink with nuclear charge: F⁻ > Na⁺ > Mg²⁺ > Al³⁺ (d).
Study loop for Periodic Properties
· Browse this chapter in the app