The geometry of IF7 is :
pentagonal bipyramidal
Iodine heptafluoride is the classic AX7 molecule of VSEPR theory. Iodine has seven valence electrons and each of the seven fluorine atoms forms one I–F bond, so the iodine carries seven bonding pairs and no lone pair.
Step 1 — Electron domains on I: 7 bonding pairs + 0 lone pairs = 7. Step 2 — Seven equivalent domains are best arranged as a pentagonal bipyramid: five fluorines in an equatorial pentagon and two axial fluorines, point group D5h. Electron diffraction confirms this shape, with the equatorial ring slightly puckered by fluxional motion.
A capped octahedron is the other common seven-coordinate polyhedron, found when six domains are arranged octahedrally with a seventh capping a face (as with the stereochemically active lone pair in XeF6); IF7 has no lone pair to cause this. A cube needs eight vertices and a trigonal prism only six, so neither fits a seven-coordinate centre.
pentagonal bipyramidal option is correct.
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Important Questions from Mixed Topic (MH-SET)
.................... is a client server application that identifies each host on the internet with a unique user-friendly name.
Every OS has a ................ or .......... which primarily resides in the main memory of the computer to perform some of the basic functions of the OS.
(i) Kernel
(ii) Interface
(iii) Nucleus
(iv) Compiler
Codes:
Which of the following are referred to as low level language?
(i) Machine language
(ii) Assembly language
(iii) High level language
(iv) Natural language
Codes:
Match the following:
List I List II (a) New York Public Library (i) Shelv AR (b) Miami University Augmented Research Group (ii) Smart library (c) Oula University Library (iii) Wolf Walk (d) North Carolina State University (iv) Find the future Codes:
Which part of the QR code represents the encoded data?
