Given below are two statements : Statement (I): The metallic radius of Al is less than that of Ga. Statement…

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 :
  1. Both Statement I and Statement II are incorrect
  2. Statement I is incorrect but Statement II is correct
  3. Statement I is correct but Statement II is incorrect
  4. Both Statement I and Statement II are correct

Solution

\(\Rightarrow\) The metallic radius order of \(\mathrm{Al} ~\&~ \mathrm{Ga}\) is
\(\mathrm{B} \lt \underbrace{\mathrm{Ga} \lt \mathrm{Al}}_{\downarrow} \lt \mathrm{In} \lt \mathrm{T} \ell\)
(due to poor shielding of d-subshell electrons)
\(\Rightarrow\) The ionic radius order of \(\mathrm{Al}^{+3} ~\&~ \mathrm{Ga}^{+3}\) is \(\mathrm{B}^{+3} \lt \mathrm{Al}^{+3} \lt \mathrm{Ga}^{+3} \lt \mathrm{In}^{+3} \lt \mathrm{T} \ell^{+3}\)

Asked in: JEE Main 2025 (02 Apr Shift 1)

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