Which of the following $f$-block element exhibits the highest oxidation state?
Which of the following $f$-block element exhibits the highest oxidation state?
- $U$
- $\mathrm{Np}$
- $\mathrm{Am}$
- $\mathrm{Pa}$
Solution
\begin{array}{llll}
\hline Element & \begin{array}{l}
Atomic \\
number
\end{array} & Configuration & \begin{array}{l}
Oxidation \\
states
\end{array} \\
\hline \mathrm{U} & 92 & {[\mathrm{Rn}] 5 f^3 6 d^1 7 s^2} & \begin{array}{l}
+3,+4, \\
+5,+6
\end{array} \\
\hline \mathrm{Np} & 93 & {[\mathrm{Rn}] 5 f^4 6 d^1 7 s^2} & \begin{array}{l}
+3,+4, \\
+5,+6,+7
\end{array} \\
\hline \mathrm{Am} & 95 & {[\mathrm{Rn}] 5 f^7 7 s^2} & +3,+4, \\
& & & +5,+6 \\
\hline \mathrm{Pa} & 91 & {[\mathrm{Rn}] 5 f^2 6 d^1 7 s^2} & +3,+4,+5 \\
\hline
\end{array}
Thus, Np exhibits highest oxidation state.
Asked in: AP EAMCET 2022 (06 Jul Shift 2)
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