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The electronic configuration of carbon is \( 1 \mathrm{~s}^{2} 2 \mathrm{~s}^{2} 2 \mathrm{p}^{2} \).
\( \mathrm{P} \) There are 12 electrons in \( \mathrm{C}_{2} \). The correct electronic

W configuration of \( \mathrm{C}_{2} \) molecule is
(1) \( \left(\sigma 1 \mathrm{~s}^{2}\right)\left(\sigma^{*} 1 \mathrm{~s}^{2}\right)\left(\sigma 2 \mathrm{~s}^{2}\right)\left(\sigma^{*} 2 \mathrm{~s}^{2}\right)\left(\sigma 2 p_{z}^{2}\right)\left(\pi 2 p_{x}^{2}\right) \)
(2) \( \left(\sigma 1 \mathrm{~s}^{2}\right)\left(\sigma^{*} 1 \mathrm{~s}^{2}\right)\left(\sigma 2 \mathrm{~s}^{2}\right)\left(\sigma^{*} 2 \mathrm{~s}^{2}\right)\left(\pi 2 p_{x}^{2}=\pi 2 p_{y}^{2}\right) \)
(3) \( \left(\sigma 1 \mathrm{~s}^{2}\right)\left(\sigma^{*} 1 \mathrm{~s}^{2}\right) \quad\left(\sigma 2 \mathrm{~s}^{2}\right) \quad\left(\sigma^{*} 2 \mathrm{~s}^{2}\right) \cdot\left(\sigma 2 p_{z}^{2}\right) \) \( \left(\pi 2 p_{x}^{1}=\pi 2 p_{y}^{1}\right) \)
(4) \( \left(\sigma 1 \mathrm{~s}^{2}\right)\left(\sigma^{*} 1 \mathrm{~s}^{2}\right)\left(\sigma 2 \mathrm{~s}^{2}\right)\left(\sigma^{*} 2 \mathrm{~s}^{2}\right)\left(\pi 2 p_{x}^{2}=\pi 2 p_{y}^{1}\right) \)
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