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NEET Chemistry NEET PYQ-The Solid State

  • question_answer
    The pyknometric density of sodium chloride crystal is \[2.165\times {{10}^{3}}kg{{m}^{-3}}\] while its X-ray density is \[2.178\times {{10}^{3}}kg\text{ }{{m}^{-3}}\]. The fraction of unoccupied sites in sodium chloride crystal is: [AIPMT 2003]

    A)       \[5.96\times {{10}^{-1}}\]

    B) \[5.96\times {{10}^{-3}}\]

    C) 5.96

    D) \[5.96\times {{10}^{-2}}\]

    Correct Answer: B

    Solution :

    [b] The fraction of unoccupied site in sodium chloride crystal is \[5.96\times {{10}^{-3}}\].


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