Among the following isomeric amines,the amine | vedclass

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(B) The boiling point of amines depends on the extent of intermolecular $H$-bonding. $1^{\circ}$-amines (primary amines) have two $H$-atoms attached t

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$n$-butylamine

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(B) The boiling point of amines depends on the extent of intermolecular $H$-bonding. $1^{\circ}$-amines (primary amines) have two $H$-atoms attached to the nitrogen atom,allowing for extensive intermolecular $H$-bonding. $n$-butylamine $(CH_3CH_2CH_2CH_2NH_2)$ is a $1^{\circ}$-amine,whereas diethylamine is a $2^{\circ}$-amine and ethyldimethylamine is a $3^{\circ}$-amine. $tert$-butylamine is also a $1^{\circ}$-amine,but its branched structure reduces the surface area for van der Waals forces compared to the straight-chain $n$-butylamine. Therefore,$n$-butylamine has the highest boiling point.

Among the following isomeric amines,the amine having the highest boiling point is:

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