The hybrid states of phosphorous atoms in PCl5 and PBr3 in gaseous phase are sp3d. But in solid PCl5, phosphorous shows sp3d2 hybrid state. While P in PBr is in sp3 hybrid state. This is because :
This question has multiple correct options
A
PCl5 in solid form exists as [PCl4]+[PCl6]−
B
PBr5 in solid form exists as [PCl4]+[PBr6]−
C
PCl5 in solid form exists as [PCl4]+Cl−
D
PBr5 in solid form exists as [PBr4]+Br−
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Updated on : 2022-09-05
Solution
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Correct options are A) and D)
Both PCl5 and PBr5 have triagonal bipyramidal geometry this is not a regular structure and is not very stable.
Therefore PCl5 splits up into two more stable octahedral and tetrahedral structures .
PCl5 in solid form exists as [PCl4]+[PCl6]−. The hybridisation state of P in [PCl4]+ and [PCl6]− is
sp3 and sp3d2 respectively.
PBr5 in solid form exists as [PBr4]+Br− and hybridisation state of P in [PBr4]+ is sp3 hybridised.