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NEET Chemistry NEET PYQ-The Solid State

  • question_answer
    AB crystallizes in a body centred cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is                                       [AIPMT (S) 2010]

    A) 335 pm

    B) 250 pm

    C) 200 pm

    D) 300 pm

    Correct Answer: A

    Solution :

    [a] For body centred cubic (bcc) lattice, distance between two oppositely charged ions,
    \[d=\frac{\sqrt{3}a}{2}=\frac{\sqrt{3}\times 387}{2}pm\]
                            \[=335.15\,pm\]


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