Question:

The total number of tetrahedral voids in the face centred unit cell is________.

Updated On: Jul 7, 2022
  • $6$
  • $8$
  • $10$
  • $12$
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The Correct Option is B

Solution and Explanation

No. of atoms per unit cell in face centred unit cell $=4$ $\therefore$ No. of tetrahedral voids $= 2 \times 4 = 8$
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Top Questions on Imperfections in Solids

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Concepts Used:

Imperfections in Solids

Any irregularity in the pattern of crystal arrangement in a solid lattice is called imperfection in solids. The occurrence of defects takes place when crystallization (the process of formation of crystals) occurs at a very fast or at an intermediate rate.

Basically, defects fall out in two forms:

  • Point Defect

When the irregularities exist from the ideal arrangement around a point or an atom in solids, the defect is known as a point defect. Types of point defects are:

  • Stoichiometric defects
  • Non-stoichiometric defects
  • Impurity defects
  • Line Defect

When the deviation from the ideal arrangement exists in the entire row of lattice points, the defect is called line defect.