[" The wavelength of the "K_(alpha)" line for an element of atomic "],[" number "43" is "lambda" .The wavelength of the "K_(alpha)" line for an "],[" element of atomic number "29" is "],[[" (1) "((43)/(29))lambda," (2) "((42)/(28))lambda],[" (3) "((9)/(4))lambda," (4) "((4)/(9))lambda]]