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Solid State question

2016 · Shift 2 · Q4
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Solid State question

2016 · Shift 2 · Q4

JEE AdvancedChemistrySolid StateMultiple correct+4 / −2
The CORRECT statement(s) for cubic close packed (ccp) three dimensional structure is (are) :
  1. A
    The number of the nearest neighbours of an atom present in the topmost layer is 12
  2. B
    The efficiency of an atom packing is 74%
  3. C
    The number of octahedral and tetrahedral voids per atom are 1 and 2, respectively
  4. D
    The unit cell edge length is 222 \sqrt 222​ times the radius of the atom
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