book problem 2E.5

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

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Hana Sigsbee 3B
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Joined: Wed Sep 30, 2020 10:00 pm

book problem 2E.5

Postby Hana Sigsbee 3B » Sun Nov 22, 2020 4:41 pm

2E.5 (a) What is the shape of a ion? (b) What is the expected OClO bond angle?

Joseph Hsing 2C
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Re: book problem 2E.5

Postby Joseph Hsing 2C » Sun Nov 22, 2020 4:59 pm

An ion by definition will have lost or gained electrons, so this can result in a change of the number of electron densities, therefore ions tend to be angular shaped.

For OClO there are 3 regions of electron so the electron domain geometry will be trigonal planar, but since only 2 of the 3 positions have atoms the molecular shape is bent. The lone pair from the Cl atom will push the O atoms closer together, so the bond angle will be a little less than 120 degrees. Hope this helped!

edward_brodell_2I
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Re: book problem 2E.5

Postby edward_brodell_2I » Sun Nov 22, 2020 8:59 pm

Oxygen is more electronegative so it will pull the electrons in its region of the molecule. So oxygen's electron density actually will repel better with the electrons of the Cl atom bond to oxygen. Looking at the distribution of valence electrons will really help because they will attract to the nucleus but also repel at the same time with other electrons. Usually the more electrons towards an atom, the higher the repulsion and the greater the bond angle.

Leyla Anwar 3B
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Re: book problem 2E.5

Postby Leyla Anwar 3B » Sun Nov 22, 2020 10:02 pm

Joseph Hsing 3H wrote:An ion by definition will have lost or gained electrons, so this can result in a change of the number of electron densities, therefore ions tend to be angular shaped.

For OClO there are 3 regions of electron so the electron domain geometry will be trigonal planar, but since only 2 of the 3 positions have atoms the molecular shape is bent. The lone pair from the Cl atom will push the O atoms closer together, so the bond angle will be a little less than 120 degrees. Hope this helped!


Does the ions having a more angular shape mean that covalently bonded molecules are less likely to? Are they more likely to be linear?


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