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Which of the following electronic configuration is/are
\( \mathrm{P} \)
wrong?
(1) \( 1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}_{\mathrm{x}}^{1}, 2 \mathrm{p}_{\mathrm{y}}^{1}, 2 \mathrm{p}_{\mathrm{z}}^{1} \) (for Nitrogen)
(2) \( 1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}_{\mathrm{x}}^{2}, 2 \mathrm{p}^{2} \mathrm{y}, 2 \mathrm{p}_{\mathrm{z}}^{1} \) (for Oxygen)
(3) \( 1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{6}, 3 \mathrm{~s}^{2}, 3 \mathrm{p}^{6}, 3 \mathrm{~d}^{4}, 4 \mathrm{~s}^{2} \) (for Chromium)
(4) \( 1 \mathrm{~s}^{2}, 2 \mathrm{~s}^{2}, 2 \mathrm{p}^{6}, 3 \mathrm{~s}^{2}, 3 \mathrm{p}^{6}, 3 \mathrm{~d}^{6}, 4 \mathrm{~s}^{2} \) (for Iron)


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