Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET20225 Jul 2022Morning ShiftChemistrySolid StateActual

Which of the following statement is correct for fcc lattice?

Options

  1. AThere are equal number of octahedral and tetrahedral voids in a unit cell.
  2. BThe tetrahedral voids are present at the edge centers
  3. COctahedral voids are present at the body center and edge centers.
  4. DIts packing efficiency (PE) is higher than hcp lattice PE.

Correct answer

C. Octahedral voids are present at the body center and edge centers.

Step-by-step solution

(a) There are equal number of octahedral and tetrahedral voids in a unit cell for fcc lattice is incorrect statement. The number of octahedral and tetrahedral void in unit cell for fcc lattice is 4 and 8 respectively. (b) The tetrahedral voids are present at the edge centers is incorrect as they are present on each body diagonal, i.e. diagonal of cubic unit cell. (c) Octahedral voids are present at the body center and edge centers. Statement (c) is correct. (d) Its packing efficiency (PE) is higher than hcp lattice

Practice Solid State on Quantrex Academy →

More from Solid State

Which of the following defects is observed in steel? 2026A metal has a fcc structure if the edge length of unit cell is 200 pm, calculate the volume occupied by particles in a unit cell. 2026A metal crystallizes in a bcc unit cell having unit cell volume 2.5 10⁻²³ cm ^3 . Find the number of unit cells in 18 g metal if the density of metal is 7.2 g cm ⁻³ . 2026Calculate the density of an element having molar mass 225 g mol ⁻¹ forming bcc structure [a^3 N_A = 75 cm ^3 mol ⁻¹] 2026What is the coordination number of particle in simple cubic structure ? 2026Calculate the radius of atom of metal forming fcc unit cell having edge length 360 pm 2026In ionic solid, anions are arranged in hcp array and cations occupy 1 2 tetrahedral voids. What is the formula of ionic compound ? [Consider A = Cation ; B = anion] 2026Which of the following statements is true about schottky defect ? 2026 Full Solid State list All AP EAMCET PYQs