Pz Sigma Bond

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Jedrick Zablan 3L
Posts: 68
Joined: Sat Aug 17, 2019 12:17 am

Pz Sigma Bond

Postby Jedrick Zablan 3L » Wed Nov 20, 2019 9:33 pm

Hello! Why does Pz form a sigma bond while the other p orbitals form a pi bond?

Ariana Iranmahboub1G
Posts: 114
Joined: Fri Aug 09, 2019 12:17 am

Re: Pz Sigma Bond

Postby Ariana Iranmahboub1G » Thu Nov 21, 2019 9:38 am

Sigma bonds occur when two orbital overlap end to end. Pi bonds form when two orbitals overlap side by side. S and p orbitals can form sigma bonds; however, since there can be 3 p orbitals (Pz, Py, Pz) in a p subshell, only one can have a sigma bond. Therefore, only one of the p orbitals is oriented around the internuclear axis, which is Pz because it coincides with the internuclear axis/z-axis.


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