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Lanthanide for which + II and +III oxidation states are common is
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Verified Answer
The correct answer is:
Eu.
$$
\begin{array}{ll}
: \mathrm{La} & -+3 \\
\mathrm{Nd} & -+2,+3,+4 \\
\mathrm{Ce} & -+3,+4 \\
\mathrm{Eu} & -+2,+3
\end{array}
$$
\begin{array}{ll}
: \mathrm{La} & -+3 \\
\mathrm{Nd} & -+2,+3,+4 \\
\mathrm{Ce} & -+3,+4 \\
\mathrm{Eu} & -+2,+3
\end{array}
$$
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