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12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank 12th CBSE Chemistry The Solid State

  • question_answer
      A metallic element crystallises into a lattice containing sequence of layers AB AB AB....... Any packing of spheres leaves out voids in the lattice. What percentage by volume of this lattice is empty space?

    Answer:

                      The AB AB AB ..... type arrangement is known as hcp packing. For hcp, the packing fraction is 0.74. This means that the empty space is 0.26 or 26%.


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