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NEET Chemistry The Solid State / ठोस प्रावस्था Question Bank Self Evaluation Test - The Solid State

  • question_answer
    Total volume of atoms present in a face-centred cubic unit cell of a metal is (r is atomic radius)

    A) \[\frac{12}{3}\pi {{r}^{3}}\]      

    B) \[\frac{16}{3}\pi {{r}^{3}}\]

    C) \[\frac{20}{3}\pi {{r}^{3}}\]     

    D) \[\frac{24}{3}\pi {{r}^{3}}\]

    Correct Answer: B

    Solution :

    [b] The face centered cubic unit cell contains 4 atom \[\therefore \] Total volume of atoms \[=4\times \frac{4}{3}\pi {{r}^{3}}=\frac{16}{3}\pi {{r}^{3}}\]


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