Mon July 09, 2012 By: Pooja Choudhary

how does a tri iodide anion has 5 regions of elecron density? explain.

Expert Reply
Tue July 10, 2012
Tri iodide ion has trigonal bypyramidal electron geometry but its molecular geometry is linear.Since,each iodine ion has 7 valence electrons.All three iodine atoms arrange to form trigonal bipyramidal geometry with its lone pairs.Hence, creating 5 regions of electron density.
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