Question

The structure of IF7 is (a) square pyramid

Answer 1

The structure of IF7 is pentagonal bipyramid because in IF7 out of 7 flourine atoms 5 of them are placed on a plane in pentagon shape. In remaining 2 flourine atoms one is placed above the plane and other is below the plane each at 90 degrees.
I hope it will be helpful.

Answer 2

$\huge\textbf{IF7}$


Valence number of electrons in I = 7

Atom of F = 7

Formula = ½ (V + M - C + A)

= ½ (7 + 7)

= ½ (14) 

= 7


In above Formula;

V = Number of valence electrons in central atom.

M = Number of monocovalent atoms around the central atom.

C = Positive charge on cation.

A = Negative charge on anion.


So, It's Hyberdization is S¹p³d³.


According to VSPER theory (Valence Shell Electron Pair Theory). It's structure is $\textbf{Pentagonal bipyramid.}$ Also it has no lone pair in it.


Diagram is in Attachment!!


So, correct option is 


$\huge\textbf{A) Pentagonal bipyramid...}$

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