A cobalt (atomic no. =27 ) target is bombereded with electrons and the wavelength of
Channel: Doubtnut
Date: 16/02/2020

A cobalt (atomic no. =27 ) target is bombereded with electrons and the wavelength of its characteristic `x`-rays spectrum are measured. A seconf weak characteristic spectrum is also found due to an impurity in the target. The wavelength of the `K_(alpha)` lines `225.0pm` (cobalt ) and `100.0pm` (impurity). Atomic number of the impurity is `(take b=1)`Please add description.