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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    \[M{{g}_{2}}{{C}_{3}}\] reacts with water forming propyne gas \[C_{3}^{4-}\] ions has:

    A) two sigma and two pi bonds

    B) three sigma and one pi bond

    C) two sigma and one pi bond

    D) two sigma and three pi bonds

    Correct Answer: A

    Solution :

    [a] The structure of \[C_{3}^{4-}\] ion is \[\overset{-2}{\mathop{C}}\,=C-\overset{-2}{\mathop{C}}\,\]i.e, \[2\sigma \,2\pi \] bonds.


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