Which of the following hydroxides is the most | vedclass

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(D) Due to lanthanoid contraction,the ionic size decreases from $Ce^{3+}$ to $Lu^{3+}$.As the size of the $M^{3+}$ ion decreases,the covalent characte

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$Ce(OH)_3$

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(D) Due to lanthanoid contraction,the ionic size decreases from $Ce^{3+}$ to $Lu^{3+}$.As the size of the $M^{3+}$ ion decreases,the covalent character of the $M-OH$ bond increases,which leads to a decrease in basic strength.Therefore,the basicity order for the given hydroxides is: $Ce(OH)_3 > Eu(OH)_3 > Yb(OH)_3 > Lu(OH)_3$.Thus,$Ce(OH)_3$ is the most basic.

Which of the following hydroxides is the most basic?

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