Which of the following statements is not corr | vedclass

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(B) The lanthanoid series is characterized by the filling of $4f$ orbitals. All lanthanoids exhibit a common $+3$ oxidation state. Due to the lanthano

Vedclass · Accepted Answer

The presence of $4f$ electrons results in the formation of $+4$ oxidation state for all members of the series.

Vedclass · Answer

(B) The lanthanoid series is characterized by the filling of $4f$ orbitals. All lanthanoids exhibit a common $+3$ oxidation state. Due to the lanthanoid contraction,the ionic radii of the members decrease gradually with an increase in atomic number. Because of their similar chemical and physical properties,the separation of lanthanoids from one another is very difficult. Statement $B$ is incorrect because while some lanthanoids exhibit a $+4$ oxidation state (e.g.,$Ce^{4+}$),it is not a property of all members of the series.

Which of the following statements is not correct regarding lanthanoids?

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