Bond Angle

Chemistry Level 2

What is the bond angle in I 3 − ? \text{I}_3^- \ ?


The answer is 180.

Devansh Shah by Devansh Shah , 25, India

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2 solutions

Nelson Mandela
Aug 15, 2015

I3- is a trigonal bipyramidal molecule with 3 lone pairs.

As per bent's rule, the lone pairs occupy equatorial positions.

So, the Iodines occupy central atom position and 2 axial positions and hence the bond angle is 180 degrees.

1 Helpful 0 Interesting 0 Brilliant 0 Confused

When you see the molecular geometry of a triiodide ion you can see that it is linear in shape so the bond angle is 18 0 o 180^{o}

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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