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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Solid State

NTA Abhyas 2020 · Chemistry · Solid State

The crystal system of a compound with unit cell dimensions a =...

The crystal system of a compound with unit cell dimensions a=0.387,b=0.387a = 0.387, b = 0.387 and c=0.504c = 0.504 nm and α=β=90o\alpha = \beta = 9{0}^{o} and γ=120o\gamma = \text{12}{0}^{o} is

Options

  1. AHexagonal
  2. BCubic
  3. CRhombohedral
  4. DOrthorhombic

Correct answer

A. Hexagonal

Step-by-step solution

For the given crystal,

a=b≠c,α=β=90o,γ=120oa = b \ne c, \alpha = \beta = 9{0}^{o}, \gamma = \text{12}{0}^{o}

These are the characteristic of a hexagonal system.
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