2E.13 part a

(Polar molecules, Non-polar molecules, etc.)

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claribel charway 1I
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2E.13 part a

Postby claribel charway 1I » Wed Nov 20, 2019 8:14 am

For part A in question 13 of 2E, I3- has a bond angle of 180 degrees even though it has 3 lone pairs on it. Why isn't its bond angle less than 180 degrees?

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Re: 2E.13 part a

Postby GFolk_1D » Wed Nov 20, 2019 9:04 am

If a molecule has two bond pairs and 3 lone pairs (AX2E3) it is linear in shape and therefore has a bond angle of 180 degrees.

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Re: 2E.13 part a

Postby EmilyJoo_1G » Wed Nov 20, 2019 11:21 am

The atoms of an AX2E3 molecule would be most stable and experience the least repulsion in a 180 degree linear model.

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Re: 2E.13 part a

Postby Ananta3G » Wed Nov 20, 2019 11:30 am

Yes, the molecular shape of the molecule will be linear. The electron geometry is trigonal bipyramidal, but that actual bond angle will be 180 degrees because of the molecular shape.

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