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Most Important Selected Qs for JEE AdvancedChemistrySolid State

Identify the correct statement(s) of the following

Options

  1. ADiamond and Zinc blende are isomorphs
  2. BCo-ordination number of oxide ion in corundum structure is 6.
  3. CVoid fraction of bcc unit cell is 0.26
  4. DZnAl ₂ O ₄ has spinel structure and Al ³⁺ occupies octahedral void

Correct answer

D. ZnAl ₂ O ₄ has spinel structure and Al ³⁺ occupies octahedral void

Step-by-step solution

Diamond and zinc blende have similar structure. ZnAl ₂ O ₄ has spinel structure. Co-ordination number of oxide ion in Al ₂ O ₃ is 4 and void fraction of bcc unit cell 0.32

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