Chemical Bonding and Molecular Structure - Result Question 91
####93. Which of the following diatomic molecular species has only $\pi$-bonds according to Molecular Orbital Theory?
(a) $O_2$
(c) $C_2$
(b) $N_2$
(d) $Be_2$
[2019]
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Solution:
- (c) Only $\pi$ bond is present in $C_2$ molecule. $\sigma 1 s^{2} \sigma^{} 1 s^{2} \sigma 2 s^{2} \sigma^{} 2 s^{2} \pi 2 p^{2} _{x}=\pi 2 p^{2} _{y}$