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NEET2009ChemistrySolid StateActual

Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å . The lattice parameter is

Options

  1. A6.8 Å
  2. B4.3 Å
  3. C3.0 Å
  4. D8.6 Å

Correct answer

B. 4.3 Å

Step-by-step solution

Neighbour distance of a body centred cubic cell d = 3 2 a , where a is the lattice parameter. array ll & 3.7= 3 a 2 or & a = 2 3.7 3 =4.3 Å array

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