Answer the following : (a) Why is NH3 more basic than PH3?
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Basicity depends on availability of electro density. If the electron density is high, it will donate the pair of electron easily, hence it acts as better base.
In NH3 and PH3, the central atom posses a lone pair. As N is smaller than P, electron density on N is high compared to P. Therefore NH3 acts as better base than PH3. It also decreases as you r moving from NH3 to BiH3. Basicity order in hydrides of 15th group is NH3>PH3>AsH3>SbH3>BiH3
Hope this helps
In NH3 and PH3, the central atom posses a lone pair. As N is smaller than P, electron density on N is high compared to P. Therefore NH3 acts as better base than PH3. It also decreases as you r moving from NH3 to BiH3. Basicity order in hydrides of 15th group is NH3>PH3>AsH3>SbH3>BiH3
Hope this helps
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