InterviewSolution
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InterviewSolution
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The `K_(alpha)` `X` - rays arising from a cobalt `(z = 27)` target have a wavelength of `179 pm`. The `K_(alpha)` `X` - rays arising from a nickel target `(z = 28)` isA. `gt 179 pm`B. `lt 179 pm`C. `= 179 pm`D. None of these |
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Answer» Correct Answer - B `lambda_(k_(a)) prop (1)/((Z - 1)^(2)) rArr (lambda_(Ni))/(lambda_(Co)) = ((Z_(Co) - 1)/(Z_(Ni) - 1))^(2) = (( 27 - 1)/(28 - 1))^(2)` `l_(Ni) = ((26)/(27))^(2) xx lambda_(Co) = ((26)/(27))^(2) xx 179` `= 165.9 pm lt 179 pm`. |
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