crystal systems

Crystal systems

Bravais demonstrated mathematically that in 3-dimensions, there are only 14 different types of arrangements possible. These 14 Bravais lattices are classified into the seven crystal systems on the basis of relative lengths of basis vectors and interfacial angles.

Seven crystal systems are:

1. Cubic

2. Tetragonal

3. Orthorhombic

4. Monoclinic

5. Triclinic

6. Triogonal (Rhombohedral)

7. Hexagonal

14 Bravais lattices are

1. Simple cubic 2. Body centered cubic 3. Face centered cubic

4. Simple tetragonal 5. Body centered tetragonal

6. Simple orthorhombic 7. Base centered orthorhombic

8. Body centered orthorhombic 9. Face centered orthorhombic

10. Simple monoclinic 11. Base centered monoclinic

12. Triclinic

13. Triogonal( Rhombohedral)

14. Hexagonal