Question

The most unsymmetrical crystal system is:

• A. cubic
• B. hexagonal
• C. triclinic
• D. orthorhombic

Answer 1

The correct option is C triclinic

The most unsymmetrical crystal system is triclinic while the most symmetrical crystal system is cubic.

The axial distances and the axial angles, $a\ne b\ne c$ and $\alpha \ne \beta \ne \gamma \ne {90}^{\circ }$ represents triclinic system.

None of the edge lengths is equal and none of the angles is equal to each other. Also, none of the angles is equal to ${90}^0$.

Examples of triclinic crystal systems include $K_{2}C{r}_2{O}_7$ and $H_{3}B{O}_3$.

Hence, the correct option is $\text{C}$