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  4. The paramagnetic property of the oxygen molecule is due to the presence of unpaired electrons present in

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Q. The paramagnetic property of the oxygen molecule is due to the presence of unpaired electrons present in

KEAMKEAM 2004Chemical Bonding and Molecular Structure

Solution:

The electronic configuration of oxygen molecule is as :
$O_2 :KK \sigma 2s^2, \sigma^*2s^2,\sigma^*2s^2_z, \pi 2p^2_x \approx\pi 2p^2_y,\pi^*2p^1_x, \pi^*2p^1_y$
The molecule has paramagnetic character due to the presence of two unpaired electrons $(\pi^*2p_x)^1\, and\, (\pi^*2p_y)^1$.