The increasing basicity order of the followin | vedclass

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(B) The basicity of amines depends on the availability of the lone pair on the nitrogen atom and the stability of the resulting conjugate acid.$(i)$ $

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$(4) < (3) < (1) < (2)$

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(B) The basicity of amines depends on the availability of the lone pair on the nitrogen atom and the stability of the resulting conjugate acid.$(i)$ $PhNHCH_3$ $(4)$ is an aromatic amine where the lone pair on nitrogen is delocalized into the benzene ring,making it the least basic.$(ii)$ Among aliphatic amines,basicity is influenced by the inductive effect $(+I)$,solvation,and steric hindrance.$(iii)$ Diethylamine $(2)$ is a $2^\circ$ amine,which is more basic than Ethylamine $(1)$ ($1^\circ$ amine) due to the $+I$ effect of two ethyl groups.$(iv)$ Trimethylamine $(3)$ is a $3^\circ$ amine. Due to significant steric hindrance and reduced solvation of its conjugate acid in water,it is less basic than Ethylamine $(1)$.Thus,the increasing order of basicity is: $(4) < (3) < (1) < (2)$.

The increasing basicity order of the following compounds is:
$(1)$ $CH_3CH_2NH_2$
$(2)$ $(CH_3CH_2)_2NH$
$(3)$ $(CH_3)_3N$
$(4)$ $PhNHCH_3$

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The increasing basicity order of the following compounds is:$(1)$ $CH_3CH_2NH_2$$(2)$ $(CH_3CH_2)_2NH$$(3)$ $(CH_3)_3N$$(4)$ $PhNHCH_3$