What is the correct order of basicity (o

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: D and F Block Elements

Question:

What is the correct order of basicity (of hydroxide) of ions?

Options:

La³⁺ > Sm³⁺ > Dy³⁺ > Lu³⁺

La³⁺ > Dy³⁺ > Sm³⁺ > Lu³⁺

Lu³⁺ > Dy³⁺ > Sm³⁺ > La³⁺

None of these

Correct Answer:

La³⁺ > Sm³⁺ > Dy³⁺ > Lu³⁺

Explanation:

La³⁺ > Sm³⁺ > Dy³⁺ > Lu³⁺

The basicity of hydroxides decreases as size of ion become smaller.