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Grade: 12
        
Why nitric oxide is paramagnetic in gaseous state but dimagnetic in the liquid and solid states? 
11 months ago

Answers : (2)

Arun
17610 Points
							
The number of electrons in Nitrogen are 7 and in oxygen are 8. Hence the number of electrons that would be present in the molecular orbitals in NO are 7 + 8 = 15. As the number of electrons are odd, all the electrons in NO molecule cannot be paired. Hence, a single electron would be present in a π*2p orbital. Therefore NO is an odd electron species and the gas is hence paramagnetic due to the presence of unpaired electron. In the liquid and the solid state, the gas dimerises. The unpaired electron becomes paired and NO is therefore diamagnetic. 
11 months ago
Singh Rahul
28 Points
							
In nitric oxide there are 11 valence electrons in gases state and one unpaird electron. So; it is paramagnetic in nature.
   But in solid &liquid state it form dimars. So; that magnetic effect of z– unpaired electrons are cancelled out. So; NO is diamagneti in solid and liquid state
12 days ago
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