Double bond

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Moris 1H
Posts: 33
Joined: Fri Apr 06, 2018 11:01 am

Double bond

Postby Moris 1H » Sun May 27, 2018 6:51 pm

How can we tell if one molecule's double bond is shorter than another molecule's double bond?

Rebecca Chu 1C
Posts: 27
Joined: Fri Apr 06, 2018 11:02 am

Re: Double bond

Postby Rebecca Chu 1C » Sun May 27, 2018 8:42 pm

You look at the size of the atoms. Smaller atoms that have small radius (and in turn, shorter bond length) will have a stronger bond and therefore, be shorter. And if one of the molecules has resonance structures, the double bond would be longer on the molecule with resonance structures.

Caroline Crotty 1D
Posts: 32
Joined: Fri Apr 06, 2018 11:02 am

Re: Double bond

Postby Caroline Crotty 1D » Sat Jun 02, 2018 11:58 am

An easy way to remember this is to realize that as the number of electrons between two nuclei increases, bonds become shorter and stronger.

MadelynNguyen1F
Posts: 59
Joined: Fri Apr 06, 2018 11:04 am

Re: Double bond

Postby MadelynNguyen1F » Sat Jun 02, 2018 1:44 pm

If there are resonance structures for one of the molecules, then the double bond for that molecule will be longer than the double bond for the other.

Alexis Bravo 1D
Posts: 30
Joined: Tue Nov 14, 2017 3:01 am

Re: Double bond

Postby Alexis Bravo 1D » Sun Jun 03, 2018 10:11 pm

The length of the bond is determined by the number of bonded electrons (the bond order). The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length.

Kelsey Li 3B
Posts: 34
Joined: Fri Sep 28, 2018 12:26 am

Re: Double bond

Postby Kelsey Li 3B » Sat Nov 10, 2018 11:12 pm

To figure out the length of the bond, you look at the amount of bonded electrons. The higher the bonded electrons, the stronger the pull between the two atoms which means a shorter bond length.


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