Chemical Bonding — Chemistry STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryChemical Bonding2 Marks
Question
Why is $O _2$ molecule paramagnetic?
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Answer
The electronic configuration of $O _2$ molecule is $(\sigma 1 s)^2\left(\sigma^* 1 s\right)^2(\sigma 2 s)^2\left(\sigma^* 2 s\right)^2\left(\sigma 2 p _z\right)^2\left(\pi 2 p _x\right)^2\left(\pi 2 p _{ y }\right)^2\left(\pi^* 2 p _x\right)^1\left(\pi^* 2 p _y\right)^1$ Since the oxygen molecule contains two unpaired electrons, it is paramagnetic.
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