Solve this following


The $\mathrm{Eu}^{2+}$ ion is a strong reducing agent in spite of its ground state electronic configuration

(outermost): [Atomic number of Eu =63]

  1. $4 f^{7} 6 \mathrm{~s}^{2}$

  2. $4 f^{6}$

  3. $4 f^{7}$

  4. $4 f^{6} 6 \mathrm{~s}^{2}$

Correct Option: 3,


$\mathrm{Eu} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{7} 6 \mathrm{~s}^{2}$

$\mathrm{Eu}^{2+} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{7}$


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