Sigma vs pi bond

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Ami_Pant_4G
Posts: 106
Joined: Sat Aug 24, 2019 12:17 am

Sigma vs pi bond

Postby Ami_Pant_4G » Sun Nov 10, 2019 9:18 pm

What is the difference between a sigma bond and a pi bond? Also, what does it mean that a pi bond is unhybridized?

Anna Chen 1K
Posts: 104
Joined: Thu Jul 25, 2019 12:18 am

Re: Sigma vs pi bond

Postby Anna Chen 1K » Sun Nov 10, 2019 9:33 pm

Sigma bonds are formed by end-to-end overlapping of atomic orbitals; pi bonds are formed when the lobe of one atomic orbital overlaps another.

chrisleung-2J
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Re: Sigma vs pi bond

Postby chrisleung-2J » Sun Nov 10, 2019 9:37 pm

Sigma bonds are the first bond that forms between two atoms, while any subsequent bonds that form are classified as π bonds.

Kaylee Sepulveda 4G
Posts: 100
Joined: Thu Jul 11, 2019 12:16 am

Re: Sigma vs pi bond

Postby Kaylee Sepulveda 4G » Sun Nov 10, 2019 9:40 pm

Only p orbitals can form π bonds and σ bonds are formed by the overlap of atomic orbitals over the internuclear axis. π bonds are oriented perpendicularly to the internuclear axis.

S and P orbitals can form different hybridizations,
s + p → sp
s + p + p → sp²
s + p + p + p → sp³

Overlapping hybridized orbitals form a σ bond
Attachments
pi bond.png
Pi Bond
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sigma bond.png
Sigma Bond
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sigma and pi bonds.gif
Pi and Sigma Bonds
sigma and pi bonds.gif (3.32 KiB) Viewed 74 times


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