Chemical Bonding And Molecular Structure Ques 5
5. Which of the following is paramagnetic?
[NEET 2013]
(a) $O_2^{-}$
(b) $CN^{-}$
(c) $NO^+$
(d) $CO$
Show Answer
Solution:
(a) Molecular orbital configuration of $O_2^-$ is
$O_2^{-}(17)=\sigma 1 s^{2}, \sigma 1 s^{*2}, \sigma 2 s^{2}, \sigma 2 s^{*2}$
$\sigma 2 p_z{ }^{2}, \pi 2 p_x{ }^{2}=\pi 2 p_y{ }^{2}, \pi^{} 2 p_x{ }^{2}=\pi^{} 2 p_y{ }^{1}$
BETA
