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Most Important Selected Qs for JEE AdvancedChemistrySolid State

Paragraph: A solid crystal is composed of X, Y and Z atoms, Z atoms (radius 200 pm ) form cubic close packed structure, whereas X (radius 50 pm ) and Y (radius 100 pm ) occupy respective voids - Assume all the voids are occupied. Now answer the following questions. Question: Now in the crystal obtained in Q. No. 13 if all the atoms along another body diagonal are removed, then the formula of the compound becomes :

Options

  1. AX₈ Y₄ Z₆
  2. BX₈ Y₆ Z₅
  3. CX ₈ Y ₄ Z ₈
  4. DX₈ Y₆ Z₇

Correct answer

D. X₈ Y₆ Z₇

Step-by-step solution

On removing atoms along another body diagonal, we lose 2 Z atoms 2 X atoms The new formula becomes = X ₄ Y ₃ Z _ 3.5 Simplest formula =X_B Y₆ Z₇

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