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  5. The Solid State / ठोस प्रावस्था

12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank MCQs - The Solid State

  • question_answer
    The edge length of unit cells in terms of radius of spheres for fcc is  X  , for bcc  Y  and for sec is  Z.

    A) \[X=2\sqrt{2}r,\,Y=\frac{4r}{\sqrt{3}},\,Z=2r\]

    B) \[X=\frac{4r}{\sqrt{3}},\,Y=2\sqrt{2},\,Z=2r\]

    C) \[X=2r,\,Y=2\sqrt{2}r,\,Z=\frac{4r}{\sqrt{3}}\]

    D) \[X=2r,\,Y=\frac{4r}{\sqrt{3}},\,Z=2\sqrt{2}r\]

    Correct Answer: A

    Solution :

    Edge length for fcc = \[2\sqrt{2}r\] Edge length for bcc =\[4r/\sqrt{3}\] Edge length for scc = 2r


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