Which of the following oxides has the maximum | vedclass

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(A) The basicity of lanthanoid oxides $(Ln_2O_3)$ decreases as the ionic radius of the $Ln^{3+}$ ion decreases across the lanthanoid series due to lan

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$Pr_2O_3$

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(A) The basicity of lanthanoid oxides $(Ln_2O_3)$ decreases as the ionic radius of the $Ln^{3+}$ ion decreases across the lanthanoid series due to lanthanoid contraction.As we move from $Pr$ $(Z=59)$ to $Lu$ $(Z=71)$,the ionic radius decreases.Therefore,the basic character follows the order: $Pr_2O_3 > Sm_2O_3 > Gd_2O_3 > Lu_2O_3$.Thus,$Pr_2O_3$ has the maximum basicity.

Which of the following oxides has the maximum basicity?

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