The increasing order of

Question:

The increasing order of $\mathrm{p} K_{\mathrm{b}}$ values of the following compounds is :

  1. $\mathrm{II}<\mathrm{IV}<\mathrm{III}<\mathrm{I}$

  2. $\mathrm{I}<\mathrm{II}<\mathrm{IV}<\mathrm{III}$

  3. $\mathrm{II}<\mathrm{I}<\mathrm{III}<\mathrm{IV}$

  4. $\mathrm{I}<\mathrm{II}<\mathrm{III}<\mathrm{IV}$


Correct Option: , 2

Solution:

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