Q.25 The molecular models and the shape of molecules（Text Q1.12）
There are two forms when multiple bond is expressed with a molecule model. In the first form, multiple bond is expressed by changing bond angle and bond length with the single bond. In the second form, the presence of more than one bond between atoms is express eddirectly in some way. Between the above two expressions of the multiple bond, which is more convenient in order to appreciate the molecular shape?