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JEE MAIN 2021
31-08-2021 S2
Question
The $\mathrm{Eu}^{2+}$ ion is a strong reducing agent in spite of its ground state electronic configuration (outermost) : [Atomic number of Eu = 63]
Select the correct option:
A
$4 f^7 6 \mathrm{~s}^2$
B
$4 f^6$
C
$4 f^7$
D
$4 f^6 6 \mathrm{~s}^2$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\begin{aligned} & \mathrm{Eu} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^7 6 \mathrm{~s}^2 \\ & \mathrm{Eu}^{2+} \rightarrow[\mathrm{Xe}] 4 \mathrm{f}^7\end{aligned}$
Question Tags
JEE Main
Chemistry
Easy
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