Q19 / 160 · TS EAMCET 2023 (12 May Shift 2) · Chemistry

Identify the crystal system in which primitive unit cell has edge lengths $a=b=200 \mathrm{pm}$ and $\mathrm{c}=300 \mathrm{pm}$ and all axial angles are same

  • Correct answer
    A
    Tetragonal
  • B
    Rhombohedral
  • C
    Monoclinic
  • D
    Cubic

Solution

For a tetragonal crystal system, $a=b \neq c$ and $\alpha=\beta=\gamma$. Cubic system is all symmetric while rhombohedral and monoclinic systems are less symmetric than the tetragonal system.

Hence, the correct answer is option: 'A'.

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