A target element A is bombarded with electrons and the wavelengths of the characterstic spectrum are measured. A second characteristic spectrum is also obtained , because of an impurity in the target. The wavelengths of the K_(alpha) lines are 196 pm (element A) and 169 pm (impurity). If the atomic number of impurity is z=(10lambda-1) . Find the value of lambda . (atomic number of element A is 27).

A target element A is bombarded with electrons and the wavelengths of

1.	A target element A is bombarded with electrons and the wavelengths of the characterstic spectrum are measured. A second characteristic spectrum is also obtained , because of an impurity in the target. The wavelengths of the K_(alpha) lines are 196 pm (element A) and 169 pm (impurity). If the atomic number of impurity is z=(10lambda-1) . Find the value of lambda . (atomic number of element A is 27).
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