PCl5 is less stable. why?

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PCl₅is less stable. why?

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Detailed Solution

PCl₅ molecule has trigonal bipyramidal structure. The three equatorial bonds are equivalent. the P-Cl bond length in equatorial position is 202 pm. The two axial bonds (240 pm) are longer. The axial bonds suffer more repulsion as compared to the equatorial bonds. Hence, PCl₅is less stable.

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