Nicotine is an addictive substance found in tobacco. identify the hybridization state and geometry of each of the nitrogen atoms in nicotine:

The structure of nicotine is as follows:

In the aromatic ring, nitrogen atom has two bonds and one lone pair therefore, hybridization will be . In five-membered ring , nitrogen has two bonds and 1 lone pair therefore, hybridization will be .

Therefore, hybridization state of and (as in the attached structure) is and respectively.

Now, according to VESPR theory for hybridization with one lone pair the geometry is bent and for hybridization with one lone pair the geometry is pyramidal.

Therefore, geometry of and (as in the attached structure) is bent and pyramidal respectively.

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