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JCECE Engineering JCECE Engineering Solved Paper-2010

  • question_answer
    If the radius of \[{{K}^{+}}\]and\[{{F}^{-}}\] are \[133\,\,pm\] and \[136\,\,pm\] respectively, the distance between \[{{K}^{+}}\]and \[{{F}^{-}}\]in \[KF\] is

    A) \[269\,\,pm\]                   

    B) \[134.5\,\,pm\]

    C)  \[136\,\,pm\]                  

    D)  \[3\,\,pm\]

    Correct Answer: A

    Solution :

    Distance between \[{{K}^{+}}\] and \[{{F}^{-}}\] in\[KP\]\[{{r}_{K}}+{{r}_{{{F}^{-}}}}=133+136=269\,\,pm\]


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