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MHT CET2019Evening ShiftChemistrySolid StateActual

The percentage of unoccupied volume in simple cubic cell is

Options

  1. A52.40%
  2. B32.00%
  3. C47.60%
  4. D68.04%

Correct answer

C. 47.60%

Step-by-step solution

Key Idea Percentage of unoccupied volume = 100 – Packing efficiency Packing efficiency = V o l u m e o f o n e a t o m V o l u m e o f c u b i c u n i t c e l l × 100 % For simple cubic cell, Packing efficiency = 4 3 π r 3 8 r 3 × 100 = 524 % ∴ Percentage of unoccupied volume in Scc = 100 – 52.4 = 47.6%

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