Question

The correct basicity order of the following lanthanide ions is
(A) \(\mathrm{La}^{3+}>\mathrm{Lu}^{3+}>\mathrm{Ce}^{3+}>\mathrm{Eu}^{3+}\)
(B) \(\mathrm{Ce}^{3+}>\mathrm{Lu}^{3+}>\mathrm{La}^{3+}>\mathrm{Eu}^{3+}\)
(C) \(\mathrm{Lu}^{3+}>\mathrm{Ce}^{3+}>\mathrm{Eu}^{3+}>\mathrm{La}^{3+}\)
(D) \(\mathrm{La}^{3+}>\mathrm{Ce}^{3+}>\mathrm{Eu}^{3+}>\mathrm{Lu}^{3+}\)

Answer 1

Ans:(D)
As size decreases, hence basicity also decreases.

Answer 2

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Answer 3

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