Verified Solution • 2025–26 Session moderate

QAIPMT-2008-Ch-2209: NEET 2008 Chemistry - Class 12 AIPMT-2008-Ch-2209 Solution: Volume occupied by one molecule of water (density = \(1\ {g…

Volume occupied by one molecule of water (density = 1 g cm−31\ \text{g cm}^{-3}) is 3.0×10−23 cm33.0 \times 10^{-23}\ \text{cm}^3 5.5×10−23 cm35.5 \times 10^{-23}\ \text{cm}^3 9.0×10−23 cm39.0 \times 10^{-23}\ \text{cm}^3 6.023×10−23 cm36.023 \times 10^{-23}\ \text{cm}^3

Multiple Choice Options

  • A 34%
  • B 28%
  • C 30%
  • D 32%

Step-by-Step Verified Solution

The ratio of volumes occupied by atoms in unit cell to the total volume of the unit cell is called as packing fraction or density of packing. For body centred cubic structure, packing fraction = 0.68 i.e., 68% of the unit cell is occupied by atoms and 32% is empty.

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