Asked in PMC Practice Test 8 (2021) 2021Moderate

CuSO4.5H2O is an example of which crystal system?

Correct answer: A. Triclinic

  • A. Triclinic
  • B. Tetragonal
  • C. Cubic
  • D. Rhombohedral

Explanation

The triclinic system is a crystal system of which the unit cell is a prism with crystallographic axes of different lengths (a b c) and of which the angles, which are all different (alpha = beta = gamma = 90 degrees), are different from 90 degrees.CuSO4.5H2O exists as a "triclinic" crystal.

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About Crystalline Solids

Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.

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