Which one of the following elements shows maximum number of different oxidation states in its compounds?

Which one of the following elements shows maximum number of different oxidation states in
its compounds?
  1. Eu
  2. La
  3. Gd
  4. $\mathrm{Am}$

Solution

We know that lanthanides La, Gd shows $+3$, oxidation state, while Eu shows oxidation state of $+2$ and $+3$. Am shows $+3$, $+4,+5$ and $+6$ oxidation states. Therefore Americium (Am) has maximum number of oxidation states.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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