Out of ammonia `(NH_(3)) and C_(2)H_(5)NH_(2)` which is more basic and why?

Explanation

The basic character of ethylamine and ammonia is due presence of lone pair of electrons on nitrogen.
In ethylamine, ethyl group due to its `+I` effect increase the electron density on nitrogen. Thus protonation takes place more readily in ethylamine than in ammonia.
`underset("Ammonia")(H-undersetunderset(H)(|)overset(..)N-H)`