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MGIMS WARDHA MGIMS WARDHA Solved Paper-2013

  • question_answer
    Mass of one atom is\[6.66\times {{10}^{-23}}g\]. Its percentage in an hydride is 95.24. Thus, hydride is

    A)  MH                       

    B)  \[M{{H}_{2}}\]   

    C)  \[M{{H}_{3}}\]                                

    D)  \[M{{H}_{4}}\]

    Correct Answer: B

    Solution :

                    Mass of one atom\[=6.66\times {{10}^{-23}}g\] Mass of\[{{N}_{0}}\]atoms\[=6.66\times {{10}^{-23}}\times 6.02\times {{10}^{23}}g\] \[=40g\] Thus, atomic weight of the element = 40
    Element % % at. wt. Ratio
    M 95.24 2.381 1
    H 4.76 4.76 2
    Thus. hydride is\[M{{H}_{2}}\].


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