Pi and Sigma bonds

[Dakota Walker 1L]

Can someone explain any general rules about using pi and sigma bonds? I understand how they overlap either end to end or sideways but do you have to draw out the entire 3D structure to figure this out? Or is there a rule deciding how many pi/sigma bonds are in molecules?

[905416023]

It depends on how many bonds there are. 1 bond=1isgma bond. 2bonds=1 sigma and 1 pie. 3bonds=1 sigma and 2 pie

[JinwooLee_1F]

The first bond is always sigma bond. The next bonds are pi bonds. For example, triple bond would be sigma bond + 2 pi bonds.

[Kishan Shah 2G]

I think the general idea behind pi and sigma bonds that we need to know is determining how many of each there are in a large molecule of some sort. So the basic rule of a single bond having 1 sigma bond, a double bond having 1 sigma and 1 pi bond, and a triple bond having 1 sigma and 2 pi bonds is useful when tying to determine this.

[Sam McNeill 1E]

Besides knowing that pi bonds are any bonds past a single bond, also know that pi bonds do not allow the molecule to rotate.

[Adelpha Chan 1B]

Can someone explain any general rules about using pi and sigma bonds? I understand how they overlap either end to end or sideways but do you have to draw out the entire 3D structure to figure this out? Or is there a rule deciding how many pi/sigma bonds are in molecules?

it is a general rule that single bonds exhibit one sigma bond, double bonds exhibit one sigma and one pi bond, and a triple bond exhibits one sigma and two pi bonds.