NH3>RNH2>R2NH\mathrm{NH}_{3}>\mathrm{RNH}_{2}>\mathrm{R}_{2} \mathrm{NH}NH3>RNH2>R2NH
R2NH>RNH2>NH3\mathrm{R}_{2} \mathrm{NH}>\mathrm{RNH}_{2}>\mathrm{NH}_{3}R2NH>RNH2>NH3
NH3>R2NH>RNH2\mathrm{NH}_{3}>\mathrm{R}_{2} \mathrm{NH}>\mathrm{RNH}_{2}NH3>R2NH>RNH2
RNH2>NH3>R2NH\mathrm{RNH}_{2}>\mathrm{NH}_{3}>\mathrm{R}_{2} \mathrm{NH}RNH2>NH3>R2NH