Atoms in the same plane

[Amina Durrani 3G]

How do you know when atoms will be in the same plane? And do double or triple bonds determine if atoms will be in the same plane since a molecule can't bend if it has double or triple bonds?

[SarahSteffen_LEC4]

I'm pretty sure that to determine whether or not atoms are in the same plane you have to see if there is the presence of a pi bond, which results from either a double or triple bond between atoms. Otherwise, if there is just a single bond/sigma bond, the atoms are free to rotate.

[VPatankar_2L]

Also, if the structure contains trigonal planar or linear arrangement, the atoms involved will be in the same plane.

[Chris Tai 1B]

Even if the molecule is "bent" or "angular" the molecule as a whole should be found in a single plane. This is true for those "bent" shaped molecules, but also for molecules that are trigonal "planar" and square "planar" (the name suggests that they lie in such a plane).

[Betania Hernandez 2E]

Atoms will be in the same plane if they have a double or triple bond since they can't rotate due to having a pi bond. Furthermore, if they are either trigonal or square planar the atoms also lie in the same plane.