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MHT CET Chemistry Solid State 2026 MHT CET 2026 (17 April Shift 2)

MHT CET Chemistry Question (2026) — Solution

Question

Calculate the void volume of bcc unit cell if volume of unit cell is 8 0 10^ -23 cm ^3

Options

  1. A. 3 08 10^ -23 cm ^3
  2. B. 4 16 10^ -23 cm ^3
  3. C. 5 44 10^ -23 cm ^3
  4. D. 2 56 10^ -23 cm ^3

Answer

D. 2 56 10^ -23 cm ^3

Step-by-step solution

The packing efficiency of a body-centered cubic (bcc) unit cell is 68\%. The percentage of void space in the unit cell is 100\% - 68\% = 32\%. Given the volume of the unit cell is 8 0 10^ -23 cm ^3. Void volume = 32 100 8 0 10^ -23 cm ^3 Void volume = 2 56 10^ -23 cm ^3 Answer: 2 56 10^ -23 cm ^3

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