JEE MAIN - Chemistry (2021 - 18th March Morning Shift - No. 2)
The ionic radius of Na+ ions is 1.02 $$\mathop A\limits^o $$. The ionic radii (in $$\mathop A\limits^o $$) of Mg2+ and Al3+, respectively, are
1.05 and 0.99
0.72 and 0.54
0.85 and 0.99
0.68 and 0.72
Explanation
The ionic radii (in $$\mathop A\limits^o $$) of $$\text{Mg}^{2+}$$ and $$\text{Al}^{3+}$$, respectively, are:
Option B:
$$0.72 \mathop A\limits^o$$ for $$\text{Mg}^{2+}$$
$$0.54 \mathop A\limits^o$$ for $$\text{Al}^{3+}$$
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