Determining bond order

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Jennifer Torres 2L
Posts: 62
Joined: Tue Nov 14, 2017 3:01 am

Determining bond order

Postby Jennifer Torres 2L » Mon Nov 19, 2018 8:34 pm

How does one determine the bond order?

505194972 3k
Posts: 27
Joined: Fri Sep 28, 2018 12:25 am

Re: Determining bond order

Postby 505194972 3k » Mon Nov 19, 2018 8:51 pm

I believe for polyatomic molecules you count the total number of bonds (sigma and pi) and then count the bond groups (areas of electron density but not lone pairs) and divide the two. for anything less you just count the number of bonds between the two molecules.

Jake Gordon 1A
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Determining bond order

Postby Jake Gordon 1A » Mon Nov 19, 2018 8:51 pm

Bond order is simply just the stability of a bond and is quantified as the number of bonds between two atoms.
EX.
F-F bond order = 1
O=O bond order = 2
N=-N bond order = 3

For average bond order would be all bond orders in one structure added up divided by the # of bonding regions
Ex NO3- (resonance)
2+1+1 all divided by 3
1 1/3 is the bond order for each resonance blended bond


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