Why does NO2 Dimerise but not?

S- character is more in NO2 orbital containing the unpaired electron. The more is the s-character more is the bond strength. Therefore NO2 combines to dimerise. While in NO the odd electron doesn’t have s character, so the bond formed is not much strong and hence it always exists as NO molecule and not as N2O4.

Why does NO2 Dimerise to Form n204?

The presence of an unpaired electron on nitrogen makes it very reactive. It tries to dimerize and form a stable compound as N2O4 wit an even number of electrons.

Why does NO2 Dimerise Doubtnut?

The dimerisation of NO2 is because of unpaired electron on nitrogen atom to form N2O4 molecule with even number of electrons.

Why does NO2 Dimerise explain Class 12?

NO2 dimerises because it contains an odd number of valence electrons and leads to the delocalisation of unpaired electrons. Upon dimerisation, it forms a more stable N2O4 molecule with an even number of electrons. Thus, it has a tendency to dimerise.

Why does NO2 Dimerise While no does not though both are odd electron molecules?

NO2 contains odd number of valence electrons. That valence electron behaves as an odd electron molecule and therefore,undergoes dimerisation to form stable N2O4 molecule with even number of electrons. Hence, NO2 dimerizes.

What is the meaning of Dimerise in chemistry?

A dimerization is an addition reaction in which two molecules of the same compound react with each other to give the adduct.

Does Clo2 Dimerise?

Clo2 does not form dimers due to the following reasons . odd electron delocalised as it involved in p-pie d-pie bonding .. in contrast to that as nitrogen doesnot contain d orbital so, the odd electron in N in NO2 is localised , so, due to this reason we can say that no2 dimerise , but clo2 doesnot .

Why NO2 is Coloured but N2O4 is Colourless?

Its unpaired electron is responsible for its colour and its dimerization. At low pressures or at high temperatures, NO2 has a deep brown colour, but at low temperatures the colour almost completely disappears as NO2 dimerizes to form dinitrogen tetroxide, N2O4.

Does no2 Dimerise?

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.

Does ClO3 Dimerise?

So, if an electron is localized, i.e. it is at rest then the tendency of the molecule to form dimer will be high. Whereas if the electrons are delocalized, i.e. it is moving, then the tendency of the molecule to form dimer will be less. I don’t understand why the tendency to form dimer in the case of ClO3 is high.

Why does clo3 Dimerise?

So, if an electron is localized, i.e. it is at rest then the tendency of the molecule to form dimer will be high. Whereas if the electrons are delocalized, i.e. it is moving, then the tendency of the molecule to form dimer will be less.

Can no Dimerise easily?

But the dimeric form of NO molecule is not possible due to the following reasons: Dimerisation takes place if there is some gain in bonding. But in the dimerisation of NO, there is no gain of electrons because the bond order of 2 ½ remains the same in the dimer.

Why does NO2 undergo dimerisation to form N2O4?

NO2 contains odd number of valence electrons. That valence electron behaves as an odd electron molecule and therefore,undergoes dimerisation to form stable N2O4 molecule with even number of electrons. In NO2, the oxidation state of Nitrogen is +4, hence it always makes an effort to reduce it’s state to +1 or better to 0. Therefore, it combines with

What is the structure of NO2 in N2O2?

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. NO2 contains odd number of valence electrons.

What happens when two molecules of NO2 combine?

For example, when two molecules of NO2 combine it would give one molecule of N2O4. The N2O4 formed would be called as a dimer of NO2. Dimerization could be due to the formation of new covalent bonds or due to intermolecular hydrogen bonding. Here, in case of N2O4, it is due to covalent bonding.

Why does NO2 have odd number of valence electrons?

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 no2 contain odd number of valance electrons. Behaves as a typical molecule.