According to molecular orbital theory, the paramagnetism of molecule is due to presence of
Unpaired electrons in the bonding molecular orbital
Unpaired electrons in the antibonding molecular orbital
Unpaired electron in the bonding molecular orbital
Unpaired electrons in the antibonding molecular orbital
We know that if the unpaired electron is present in the molecular orbital of the molecule then it will behave as paramagnetic.
From the above image, the unpaired electrons are in the anbonding molecular orbitals.
Hence, the correct answer is Option (4)
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