ChemistryThe frequency of the characterstic X- ray of K α line of metal target ‘M’ is 2500 cm – 1 and the graph between ν Vs ‘ Z ‘ is as follows, then atomic number of M is

The frequency of the characterstic X- ray of Kα line of metal target 'M' is 2500 cm-1and the graph between 

ν  Vs 'Z' is as follows, then atomic number of M is
 

  1. A
    49
  2. B
    50
  3. C
    51
  4. D
    25

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    Solution:

    sqrt nu = a(Z - b);

     

    large frac{{sqrt nu }}{y} = frac{{az}}{{mx}} - frac{{ab}}{c}

                                                                                          Given slope = a = tan 45o = 1
                                                                                                  y- intercept = ab= OA =1
                                                                                                    ν =2500Hz

    large sqrt {2500} = 1(Z) - 1


                                                                                                          50=Z-1
                                                                                                           Z=51

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