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Why KO2 is paramagnetic in nature? |
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Answer» KO2\xa0is a superoxide in which, only one electron is released from the dioxygen atom and a superoxide ion is represented as O2-\xa0. So, in\xa0KO2\xa0the oxygen atoms bear -1/2 oxidation state and they also behave as a\xa0free radical species, having an\xa0unpaired electron.We know that a molecule becomes paramagnetic due to the presence of unpaired electrons. Hence,\xa0KO2\xa0behaves as paramagnetic molecule. KO2 means K+O2-here O2- is paramagnetic .according to molecular orbital theory O2- has one antibonding orbital is partial fill.i.e 1sigma s^2 , 1sigma*s^2,2sigma s^2,2sigma*s^2, 2sigma. px^2, pi 2py^2=pi2pz^2, pi*2py^2=pi*2pz^1we show last in configuration of O2- has partially filled so KO2 is paramagnetic. |
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