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JEE Main & Advanced JEE Main Paper (Held On 25 April 2013)

  • question_answer
                    The catenation tendency of C, Si and Ge is in the order Ge < Si < C. The bond energies \[\left( \operatorname{in}\operatorname{K}\operatorname{J}\operatorname{mo}{{1}^{-1}} \right)\]of C-C, Si-Si and Ge-Ge bonds are respectively:     JEE Main Online Paper ( Held On 25  April 2013 )

    A)                 348, 297, 260     

    B)                                        297, 348, 260

    C)                                        348, 260, 297     

    D)                                        260, 297, 348

    Correct Answer: A

    Solution :

                    The linking of identical atoms with each other to form long chains is called catenation. However, this property decreases from carbon to lead. Decrease of this property is associated with M-M bond energy which decreases from carbon to lead.


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