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- annemarielawrence
- Posts: 50
- Joined: Fri Sep 24, 2021 7:02 am
Sigma and pi bond calculation
Postby annemarielawrence » Fri Dec 03, 2021 8:10 pm
How do we determine how many sigma and pi bonds a molecule has?
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- Charmaine Ho 2G
- Posts: 100
- Joined: Fri Sep 24, 2021 7:06 am
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Re: Sigma and pi bond calculation
Postby Charmaine Ho 2G » Fri Dec 03, 2021 8:16 pm
A single bond contains one sigma bond.
A double bond contains one sigma and one pi bond.
A triple bond contains one sigma and two pi bonds.
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- Ellie Fox 2K
- Posts: 100
- Joined: Fri Sep 24, 2021 5:28 am
Re: Sigma and pi bond calculation
Postby Ellie Fox 2K » Fri Dec 03, 2021 9:00 pm
Like the previous post says, to calculate the number of sigma bonds, count up all of the single bonds. For double bonds one of the bonds is a sigma bond and the other is a pi bond. For a triple bond one of the bonds is a sigma bond, and the other 2 are pi bonds.
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- Esther Kim
- Posts: 99
- Joined: Fri Sep 24, 2021 6:07 am
Re: Sigma and pi bond calculation
Postby Esther Kim » Fri Dec 03, 2021 10:27 pm
A single bond always has one sigma bond
double bond always has one sigma bond and one pi bond
triple bond always has one sigma bond and 2 pi bonds
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- Matt Vargo 2D
- Posts: 51
- Joined: Fri Sep 24, 2021 5:28 am
Re: Sigma and pi bond calculation
Postby Matt Vargo 2D » Fri Dec 03, 2021 11:01 pm
Every single bond is a sigma bond. A double bond contains one sigma bond and one pi bond. A triple bond contains one sigma bond and two pi bonds. With this information, it is possible to analyze a molecule's structure and determine the number of sigma and pi bonds.
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- Valerie M Dis 2E
- Posts: 84
- Joined: Fri Sep 24, 2021 6:40 am
Re: Sigma and pi bond calculation
Postby Valerie M Dis 2E » Fri Dec 03, 2021 11:39 pm
Every molecule has at least one sigma bond. Every bond after a single bond is a pi bond. For example, a triple bond always has one sigma bond and 2 pi bonds
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- Kavya Anand 2B
- Posts: 101
- Joined: Fri Sep 24, 2021 5:25 am
Re: Sigma and pi bond calculation
Postby Kavya Anand 2B » Sat Dec 04, 2021 1:22 am
To calculate the number of sigma bonds, count the number of bonds in a molecule (counting all single, double, and triple bonds as equal). For pi bonds, every double bond should count as one bond, while every triple bond should count as two bonds.
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- Violet Mbela 2B
- Posts: 98
- Joined: Fri Sep 24, 2021 5:15 am
Re: Sigma and pi bond calculation
Postby Violet Mbela 2B » Sat Dec 04, 2021 2:24 pm
For me, I kinda look at it like what's on the outside and the inside. It's best seen in triple bonds, but in double bonds, I see it as one outside and one inside.
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Re: Sigma and pi bond calculation
Postby 205282258 » Tue Dec 07, 2021 8:59 am
look for the bonds in the molecule to determine the amount of sigma and pi bonds. if there is a single bond, there is one sigma bond, double bond means there is one sigma and one pi, and a triple bond means there's one sigma and two pi
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- sadie_remillard_1A
- Posts: 99
- Joined: Fri Sep 29, 2023 10:39 am
Re: Sigma and pi bond calculation
Postby sadie_remillard_1A » Tue Oct 24, 2023 12:25 pm
Hi 006020799,
When determining how many bonds each molecule has, a general rule is that the number of bonds for a neutral atom is equal to the number of electrons in a full valence electron shell (2 or 8) minus the number of valence electrons. For example, Carbon full electron shell can hold up to 8 valence electrons though it is only filled with 4 valence electrons in the neutral state. This Carbons typical number of bonds is 4.
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