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)



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