| 11. | O1, O2, M2 and Si all lie on mirror planes, while M1 exists on an inversion center.
|
| 12. | They also have the characteristic mirror plane, which can produce a perfect mirror image when divided in two.
|
| 13. | As shown to the left, in the conrotatory transition state there is a ? mirror plane of symmetry.
|
| 14. | The monoclinic system includes crystal classes with a single twofold rotation axis and / or a mirror plane.
|
| 15. | In this mechanism, the symmetry element that persists throughout the entire mechanism is the ? mirror plane of reflection.
|
| 16. | This means it can have radial symmetry, mirror plane symmetry, or mirror plane symmetry perpendicular to the two-fold axis.
|
| 17. | This means it can have radial symmetry, mirror plane symmetry, or mirror plane symmetry perpendicular to the two-fold axis.
|
| 18. | The absence of optical activity is due to a mirror plane in the molecule, [ segmented line in picture below]
|
| 19. | This figure has four symmetry operations : the identity operation, one twofold axis of rotation, and two nonequivalent mirror planes.
|
| 20. | The symmetry operation is an action, such as a rotation around an axis or a reflection through a mirror plane.
|
