JEE Main & Advanced Sample Paper JEE Main Sample Paper-23

  • question_answer
    The increasing order of melting point of CsF, Lil, NaBr and \[KC\ell \] is :

    A)  \[NaBr<KC\ell <LiI<CsF\]

    B)  \[CaF<KC\ell <NaBi<LiI\]

    C)  \[LiI<NaBr<KC\ell <CsF\]

    D)  \[LiI<KC\ell <CsF<NaBr\]

    Correct Answer: C

    Solution :

    Covalent character in ionic compounds is governed by Fazan's rules. Covalent character \[\propto \] size of anion; Covalent chara ter \[\propto \] charge on cation As covalent character increases the ionic character decreases in the compounds Hence increasing order of ionic character is \[Lil<NaBr<KCl<CsF\].


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