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CBSE Class 12-science Answered

Bond angle in PH4+>PH3. why?
Asked by viveksureshkumar | 02 Dec, 2010, 11:26: PM
answered-by-expert Expert Answer

In PH3, P is sp3 hybridized. Three orbitals are involved in bonding with three hydrogen atoms and the fourth one contains a lone pair. As lone pair-bond pair repulsion is stronger than bond pair-bond pair repulsion, the tetrahedral shape associated with sp3 bonding is changed to pyramidal. PH3 combines with a proton to form in which the lone pair is absent. Due to the absence of lone pair in, there is no lone pair-bond pair repulsion. Hence, the bond angle in is higher than the bond angle in PH3.

 

Answered by | 03 Dec, 2010, 12:24: AM
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