Chemistry · 2021
JEE Main · 25 July 2021, Shift 1 · Q33
The ionic radii of K^+, Na^+, Al^3+ and Mg^2+ are in the order:
The ionic radii of $\displaystyle \mathrm{K}^{+}, \mathrm{Na}^{+}, \mathrm{Al}^{3+}$ and $\displaystyle \mathrm{Mg}^{2+}$ are in the order :
Official answer
(3)
$\displaystyle \mathrm{Al}^{3+}<\mathrm{Mg}^{2+}<\mathrm{Na}^{+}<\mathrm{K}^{+}$
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.