The sketch indicates the electron groups around the center atom only. The name for the overall shape of a particle may or may not be the same as the name for the geometry of its electron groups. This is an important fact because the shape is dictated by the positions of both unshared electron pairs and electrons in bonds. If all electron pairs on the center atom are used for single bonds , then the overall shape of the molecule or ion has the same name as the electron group geometry around the center atom. If there are lone pairs, a double bond, or a triple bond on the center atom, then the name for the overall particle shape is different from the name of the electron group geometry.
All geometries have a possible molecule shape that is linear.
All diatomic or 2-atom molecules are linear regardless of the number of electron groups. Materials list Printed copies of templates in this exercise tape scissors return to top Use a ruler and a ball-point pen to scribe the lines that mark where folds need to be made. You do the scribing by lining up the ruler along the fold line and running the ball point pen tip along the printed lines. Scribing the edges makes it easier to have the right positions for the folds. Cut out each paper model.