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JEE Main & Advanced Chemistry Chemical Bonding and Molecular Structure / रासायनिक आबंधन एवं आणविक संरचना Question Bank Covalent bonding

  • question_answer
    The interatomic distances in \[{{H}_{2}}\] and \[C{{l}_{2}}\] molecules are 74 and 198 pm respectively. The bond length of \[HCl\] is [MP PET 1993]

    A)                 272 pm

    B)                 136 pm

    C)                 124 pm

    D)                 248 pm

    Correct Answer: B

    Solution :

                Middle length of \[{{H}_{2}}=74\,pm\]            Length of \[H=\frac{74}{2}=37pm\]            Middle length of \[C{{l}_{2}}=198\,pm\]            Length of \[Cl\]\[=\frac{198}{2}=99\,pm\]            Bond length of HCl = Length of H + Length of Cl                               = 37 + 99 = 136 pm


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