Identify the strongest base from the followin | vedclass

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(B) In the case of lanthanides,as the atomic number $(Z)$ increases,the ionic size decreases due to lanthanide contraction. As the size of the $Ln^{3+

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$La(OH)_3$

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(B) In the case of lanthanides,as the atomic number $(Z)$ increases,the ionic size decreases due to lanthanide contraction. As the size of the $Ln^{3+}$ ion decreases,the covalent character of the $Ln-OH$ bond increases,which leads to a decrease in basic strength. Therefore,the basic character follows the order: $La(OH)_3 > Pr(OH)_3 > Sm(OH)_3 > Lu(OH)_3$. Thus,$La(OH)_3$ is the strongest base.

Identify the strongest base from the following.

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