X-rays emitted from a copper target and a molybdenum target are found to contain a line of wavelength 22.85 nm attributed to the Kα line of an impurity element. The Kα lines of copper (Z=29) and molybdenum (Z=42) have wavelength 15.42 nm and 7.12 nm respectively. Using Moseley’s law, γ1/2 = a(Z-b) calculate the atomic number of the impurity element.

pranshu aggarwal , 13 Years ago

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