Answer

Draw the structure of ammonia and determine the number of bonding pairs of electrons and the number of lone-pair electrons.

Ball-and-Stick

Lewis Structure

Electron-dot Structure

Notice there are three bonds to the nitrogen in this compound and a lone-pair of electrons on the nitrogen. We can only see the lone-pair in the right most Electron-dot structure. It is present in the other two structures, it just is not shown.

Amines can be thought of as derivatives of ammonia. Amines contain at least one carbon containing substituent bonded to the nitrogen in place of one of the hydrogen atoms. So if we replace one hydrogen atom with the simplest carbon containing branching group we would have the following compound, CH3NH2. Draw the structure of this compound?

Answer