Question

why ko2 is paramagnetic in nature ???

Answer 1

KO2 is a superoxide in which, only one electron is released from the dioxygen atom and a superoxide ion is represented as O2- . So, in KO2 the oxygen atoms bear -1/2 oxidation state  and they also behave as a free radical species, having an unpaired electron.

We know that a molecule becomes paramagnetic due to the presence of unpaired electrons. Hence, KO2 behaves as paramagnetic molecule.

Answer 2

KO2 is paramagnetic in nature

• A superoxide with an odd number of electrons is called KO2 (unpaired electron). As a result, KO2 has a paramagnetic nature.
• A paramagnetic electron is an unpaired electron. NO has one unpaired electron. Hence, it is Diamagnetic.
• KO2 is superoxide that contains an odd number of electrons (unpaired electrons). Therefore KO2 is paramagnetic.
• The oxidation state of K in KO2 - is +1. It has 1 unpaired electron in π*2p MO.
• combustion in dry air to potassium superoxide, KO2, which is used in respiratory equipment because it liberates oxygen and removes carbon dioxide and water vapor. (The superoxide of potassium is a yellow solid consisting of K+and O2− ions.

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