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Which of the following is not correct for electronic distribution in the ground state?
(a) Co \( [\mathrm{Ar}] \quad 1 \downarrow \)
(b) \( \mathrm{Ni}[\mathrm{Ar}] \quad 11 \) \begin{tabular}{|l|l|l|l|l|} \hline 1 & \( 1 \downarrow \) & 1 & & \\ \hline \end{tabular}
(c) \( \mathrm{Cu}[\mathrm{Ar}], 1 / \) \begin{tabular}{|l|l|l|l|} \hline \( \mathbb{1} \) & \( \mathbb{l} \) & \( \mathbb{l} \) & \( \mathbb{1 L} \) \\ \hline \end{tabular}
(d) All of the above
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