Engineering
Chemistry
VSEPR Theory
Question

The structure of IF7 is

square pyramid

trigonal bipyramid

pentagonal bipyramid

octahedral

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Solution

The structure is pentagonal bipyramid having sp3d3 hybridisation as given below :

Fb – I – Fb = 72º (5 number)                 ;            Fd – I – Fa = 90º (10 number)

Fb – I bond length = 1.858 ± 0.004 Å    ;           Fa – I bond length = 1.786 ± 0.007 Å.

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