Question

Among the following compounds, the most basic compound is:

• A.
• B.
• C.
• D. All are equally basic.

Answer 1

The correct option is C

Between A and C
In A , the nitrogen is $s{p}^2$ hybridised, as compared to nitrogen in C which is $s{p}^3$ hybridised.
More the s character, more is the electronegativity, and lesser is the tendency to donate lone pair of electrons.
In B :
The lone pair on nitrogen is delocallized and not fully available for donation making it less basic .
Since C has the least s character and no delocalisation , so it is the most basic compound