JEE Mains · Chemistry · STD 12 - 4. d and f- block elements
The \(\mathrm{Eu}^{2+}\) ion is a strong reducing agent in spite of its ground state electronic configuration (outermost) : [Atomic number of \(\mathrm{Eu}=63\) ]
- A \(4 f^{7} 6 \mathrm{~s}^{2}\)
- B \(4 f^{6}\)
- C \(4 f^{7}\)
- D \(4 f^{6} 6 \mathrm{~s}^{2}\)
Answer & Solution
Correct Answer
(C) \(4 f^{7}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Eu} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{7} 6 \mathrm{~s}^{2}\) \(\mathrm{Eu}^{2+} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^{7}\)
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