Select any of the following that have at least one bond angle of exactly 120 degrees.
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Problem
Select any of the following that have at least one bond angle of exactly 120 degrees.
Step-by-step solution
Molecules with trigonal planar geometry (like BF3) and trigonal bipyramidal geometry (like PCl5) have bond angles of 120 degrees. Octahedral geometry also has 90 and 180 degree angles, but the equatorial angles are 90 degrees and axial angles are 180 degrees. However, some representations of octahedral can show 120 degrees in certain planes. The image shows structures that represent these geometries.
Answer
Trigonal planar, trigonal bipyramidal, octahedral