Molecule Shape for HCN

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

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Ashley Odibo Dis3E
Posts: 31
Joined: Wed Nov 15, 2017 3:03 am

Molecule Shape for HCN

Postby Ashley Odibo Dis3E » Tue Nov 27, 2018 8:40 am

Just for clarification, is the molecule HCN linear because it has a triple bond on the side with a lone pair? Because I though molecules usually slightly bend due to lone pairs.
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Fanny Lee 2K
Posts: 73
Joined: Fri Sep 28, 2018 12:29 am

Re: Molecule Shape for HCN

Postby Fanny Lee 2K » Tue Nov 27, 2018 9:33 am

Yes, HCN is linear. The bent shape only applies to lone pairs on the central atom. The lone pairs on the central atom have a stronger repulsion and thus push the two other bonds slightly closer together.
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Matthew Mar 1J
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Re: Molecule Shape for HCN

Postby Matthew Mar 1J » Tue Nov 27, 2018 11:32 am

You can also tell because HCN only has two regions of electron density around the central atom and the shape to position two regions the farthest apart is linear.
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