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Explain why PCl(5) is trigonal bipyramid...

Explain why `PCl_(5)` is trigonal bipyramidal whereas `IF_(5)` is square pyramidal ?

A

Presence of unshared electron pair on I which is oriented so as to minimize repulsion while P in `PCl_(5)` has no unshared pair

B

Octet of P is complete while that of I is incomplete

C

P and I are of different groups

D

F and Cl have different extent of repulsion

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The correct Answer is:
A
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