NEET Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति NEET PYQ-Classification Elements In Properties

  • question_answer
    Among the following which one has the highest cation to anion size ratio?                                [AIPMT (M) 2010]

    A)  Csl        

    B)  CsF                 

    C)  LiF   

    D)  NaF

    Correct Answer: B

    Solution :

    The order of size of given cations is \[L{{i}^{+}}<N{{a}^{+}}<C{{s}^{+}}\] and the order of size of given anions is  \[{{I}^{-}}>{{F}^{-}}\]. Thus, when the cation is largest and anion is smallest, the cation to anion size ratio is maximum.                                   Hence, cation to anion size ratio is maximum for CsF.   


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