Chemistry - GOC Question with Solution | TestHub

$\mathrm{C}{\mathrm{H}}_3\ddot{\mathrm{N}}{\mathrm{H}}_2\mathrm{ }$(Aliphatic amines) Most basic due to +I effect of methyl group. Methoxy group provides electron density (+M)-$\mathrm{N}{\mathrm{H}}_2$



$-\mathrm{N}{\mathrm{O}}_2$group with draws electron density from N of$-\mathrm{N}{\mathrm{H}}_2$




$\mathrm{C}{\mathrm{H}}_3\ddot{\mathrm{N}}{\mathrm{H}}_2\mathrm{ }$Most basic because NH₂connected with sp³C while in i,ii&iii Connected with

sp²C & basic strength$\propto$+M/+I

basic strength$\propto$$\frac{1}{-\text{M}}\propto \frac{1}{-\text{I}}$

NO₂exert -M so least basic while -OCH₃exert +M so more basic



M effect is a stronger effect than the effect