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Grade 12th passOrganic Chemistry

PCl5 is well known but PH5 cannot be prepared Explain why?

Profile image of Shreya
9 Years agoGrade 12th pass
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1 Answer

Profile image of Umakant Biswal
9 Years ago
dear shreya 
there are mistake in your question , its Pi5 , not PH5 . 
in pcl5 , due to small size and high electronegativity of cl . the hybridisation is possible . 
whereas in the case of pi5 molecule , hybridisation is restricted due to large size and less electronegativity of iodine . 
hence , pi5 is not possible , and highly unstable . 
HOPE IT CLEARS 
kindly approve ..

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