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Topic: Blue colour of liquid oxygen  (Read 3578 times)

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Revned

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Blue colour of liquid oxygen
« on: May 03, 2005, 05:45:05 PM »
Why is liquid oxygen faint blue colour?

Is it something to do with paramagnetism?, or electron arrangments?
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charco

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Re:Blue colour of liquid oxygen
« Reply #1 on: May 04, 2005, 02:55:50 PM »
yes...

the oxygen molecule is paramagnetic with unpaired electrons in molecular antibonding orbitals according to molecular orbital theory. Transitions of electrons between molecular orbitals are responsible for the colour
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