Chemical Bonding And Molecular Structure Question 373
Question: Which of the following is paramagnetic
[DPMT 2005]
Options:
A) $ N_2 $
B) $ C_2 $
C) $ N_2^{+} $
D) $ O_2^{2-} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ N_2:KK\sigma {{(2s)}^{2}}\sigma *{{(2s)}^{2}}\pi {{(2p_{x})}^{2}}\pi {{(2p_{y})}^{2}}\sigma {{(2p_{z})}^{2}} $ (diamagnetic)
$ C_2:KK\sigma {{(2s)}^{2}}\sigma *{{(2s)}^{2}}\pi {{(2p_{x})}^{2}}\pi {{(2p_{y})}^{2}} $ (diamagnetic)
$ N_2^{+}:KK\sigma {{(2s)}^{2}}\sigma *{{(2s)}^{2}}\pi {{(2p_{x})}^{2}}\pi {{(2p_{y})}^{2}}\sigma {{(2p_{z})}^{2}} $ (paramagnetic)
$ O_2^{2-}:KK\sigma {{(2s)}^{2}}\sigma *{{(2s)}^{2}}\sigma {{(2p_{z})}^{2}}\pi {{(2p_{x})}^{2}}\pi {{(2p_{y})}^{2}} $ $ \pi *{{(2p_{x})}^{2}}\pi *{{(2p_{y})}^{2}} $ (diamagnetic)
