Amines

The strength of a base is determined by the electron-donating ability of the group attached to the nitrogen atom. In amines:
- The stronger the electron-donating group, the stronger the base.
- Alkyl groups (such as ) are electron-donating, increasing the electron density on nitrogen and making it a stronger base.
Thus, (ethylamine) is the strongest base, as the ethyl group is more electron-donating compared to the phenyl group in (aniline).