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  4. The order of basicity of amines in gaseous state is:

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Q. The order of basicity of amines in gaseous state is:

JEE MainJEE Main 2013Amines

Solution:

The correct order of relative basicity of amines in the gas phase is $3^° > 2^° > 1^° > NH_3$ The alkyl group releases electron and thus, tends to disperse the positive charge of the alkyl ammonium ion and therefore stabilises it Since, $NH_4^+$ (from $NH_3$) has no such alkyl group, it is not stabilised to such an extent as alkyl ammonium ion.