Multiple Choice
What is the electron geometry of the ion I3−?
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12. Molecular Shapes & Valence Bond Theory
Electron Geometry
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What is the electron geometry of ICl_5?
A
Octahedral
B
Square pyramidal
C
Tetrahedral
D
Trigonal bipyramidal
Verified step by step guidance1
Identify the central atom in the molecule, which is iodine (I) in ICl_5.
Determine the number of valence electrons on the central atom. Iodine has 7 valence electrons.
Count the number of bonding pairs and lone pairs around the central atom. ICl_5 has 5 bonding pairs (from 5 chlorine atoms) and 1 lone pair on iodine.
Calculate the total number of electron pairs (bonding + lone pairs) around iodine, which is 6 pairs in total.
Use the VSEPR theory to determine the electron geometry based on 6 electron pairs, which corresponds to an octahedral electron geometry.
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