Which is least basic? SbH_(3), PH_(3), NH_(3), AsH_(3) ? – InterviewSolution

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1.	Which is least basic? SbH_(3), PH_(3), NH_(3), AsH_(3) ?
Answer» Solution :A compound which is most acidic is obviously least BASIC. Since `SbH_(3)` is most acidic, therefore, it is leat basic. Or As the SIZE of the atom increases, ELECTRON DENSITY DECREASES and hence basicity decreases. Thus `SbH_(3)` is least basic.

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