A cobalt (atomic no. =27) target is bombarded with electrons, and the wavelengths of its characteristic X−ray spectrum are measured. A second weak characteristic spectrum is also found, due to an impurity in the target. The wavelengths of the Kα lines are 225.0 pm (cobalt) and 100.0 pm (impurity). Atomic number of the impurity is (take b=1)

A cobalt (atomic no. =27) target is bombarded with electrons, and the

1.	A cobalt (atomic no. =27) target is bombarded with electrons, and the wavelengths of its characteristic X−ray spectrum are measured. A second weak characteristic spectrum is also found, due to an impurity in the target. The wavelengths of the Kα lines are 225.0 pm (cobalt) and 100.0 pm (impurity). Atomic number of the impurity is (take b=1)
Answer» A cobalt (atomic no. $= 27$ ) target is bombarded with electrons, and the wavelengths of its characteristic $X -$ ray spectrum are measured. A second weak characteristic spectrum is also found, due to an impurity in the target. The wavelengths of the $K_{α}$ lines are $225.0 pm$ (cobalt) and $100.0 pm$ (impurity). Atomic number of the impurity is (take $b = 1$ )

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