JEE MAIN - Chemistry (2025 - 2nd April Morning Shift - No. 4)
Given below are two statements :
Statement (I) : The metallic radius of Al is less than that of Ga .
Statement (II) : The ionic radius of $\mathrm{Al}^{3+}$ is less than that of $\mathrm{Ga}^{3+}$.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I is correct but Statement II is incorrect
Both Statement I and Statement II are correct
Statement I is incorrect but Statement II is correct
Both Statement I and Statement II are incorrect
Explanation
$\Rightarrow$ The metallic radius order of $\mathrm{Al} \& \mathrm{Ga}$ is
_2nd_April_Morning_Shift_en_4_1.png)
(due to poor shielding of d-subshell electrons)
$\Rightarrow$ The ionic radius order of $\mathrm{Al}^{+3} \& \mathrm{Ga}^{+3}$ is
$\mathrm{B}^{+3}<\mathrm{Al}^{+3}<\mathrm{Ga}^{+3}<\mathrm{In}^{+3}<\mathrm{T} \ell^{+3}$
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