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Assertion: On cooling, the brown colour ...

Assertion: On cooling, the brown colour of nitrogen dioxide disappears.
Reason: On cooling, `NO_(2)` undergoes dimerisation resulting in the pairing of the odd electron in `NO_(2)`.

A

If both A and R are correct and R is the correct explanation of A

B

If both A and R are correct but R is not the correct explanation of A

C

If A is correct but R is incorrect

D

If A is incorrect but R is correct

Text Solution

Verified by Experts

The correct Answer is:
A
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Formula of nitrogen dioxide is NO_(2) .

why does NO_(2) dimerise?

Asseration: ClO_(2) possess old number of electrons. Reason: ClO_(2) dimerises to procvide the pairing of odd electron in it like other odd electron m olecules.

In NO_(2) molecule N atom undergoes in :