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Grade: 12
        
 Why does NO2 dimerise?
2 years ago

Answers : (4)

Himalaya Pramanick
63 Points
							
In NO2 structure there is an unpaired electron left on Nitrogen atom, so it is reactive it dimerises to pair up its electron and gains stability as N2O2.  Refer to NCERT for the bent structure of NO2.
2 years ago
grenade
2060 Points
							
 NO2 contains odd number of valence electrons. It behaves as an odd electron molecule and therefore undergoes dimerisation to form stable N2O4 molecule with even number of electrons
2 years ago
Binay Kumar Prasad
12 Points
							
86
There is always a tendendy of atoms in the molecules to attain most lowest oxidation state, because lower oxidation state provide more stability to that particular atom in the molecule. In NO2 the oxidation state of Nitrogen is +2 hence it always makes an effort to reduce it further to +1 or better to 0. Therefore it combines with another NO2 molecule and attain oxidation state of +1 from +2 (earlier). This is the reason that NO2 dimere
one year ago
Binay Kumar Prasad
12 Points
							
here is always a tendendy of atoms in the molecules to attain most lowest formal charge on itself, because lower formal charge provide more stability to that particular atom in the molecule . In NO2 the formal charge of Nitrogen is +2 hence it always makes an effort to reduce it further to +1 or better to 0. Therefore it combines with another NO2 molecule and attain formal charge of +1 from +2 (earlier). This is the reason that NO2 dimere
257
one year ago
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