NEET Sample Paper NEET Sample Test Paper-91

  • question_answer
    An element has bcc strucutre having unit cells \[12.08\times {{10}^{23}}.\]The number of atoms in these cells is

    A) \[12.08\times {{10}^{23}}\]     

    B)        \[24.16\times {{10}^{23}}\]

    C) \[48.38\times {{10}^{23}}\]     

    D)        \[12.08\times {{10}^{22}}\]

    Correct Answer: B

    Solution :

    [b] Number of unit cells \[\text{=}\frac{\text{Total number of atoms}}{\text{Rank of Unit Cell }\left( \text{Z} \right)}\] \[\therefore \]   Number of atoms \[=12.08\times {{10}^{23}}\times 2\] \[=24.16\times {{10}^{23}}\]  (for bcc z = 2)


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