Cations vs anions

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

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104904344
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Joined: Fri Sep 28, 2018 12:27 am

Cations vs anions

Postby 104904344 » Sun Nov 18, 2018 10:38 pm

How do bond angles differ in cations vs anions?

madisondesilva1c
Posts: 91
Joined: Fri Sep 28, 2018 12:16 am

Re: Cations vs anions

Postby madisondesilva1c » Sun Nov 18, 2018 10:41 pm

I am pretty sure that this question will be specific for the atoms involved in forming the cation or anion. Depending on the number of VE and then the bonds formed as well as the Lone pairs present, this will determine the bond angles, not the pure fact that the structure is a cation or anion. You may still need to find shape and see how LP will affect the typical bond angles.

caseygilles 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

Re: Cations vs anions

Postby caseygilles 1E » Sun Nov 18, 2018 11:58 pm

In cations and anions, there is a chance that excess lone pairs could be necessary in the Lewis structure of the atom, thus distorting the bond angle from its standard number. For example, a lone pair on the Carbon of CH4 causes the bond angle to drop slightly below its normal 109.5 degrees for the tetrahedral shape due to the lone pair's repulsion with the other electrons.

Connie Chen 3D
Posts: 31
Joined: Mon Jan 08, 2018 8:12 am

Re: Cations vs anions

Postby Connie Chen 3D » Mon Nov 19, 2018 10:04 am

Cations have less electrons while anions have more. This can result in removing a lone pair or adding a lone pair, which causes differences in VSEPR shape simply because lone pairs push repel nearby bonded elements.


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