6.Which of the following description about atomic X-ray spectrometry is NOT correct? (4%)
(A)X-rays are electromagnetic radiation with very short wavelengths (≤ 10 nm).
(B) X-ray line spectra involves electronic transitions of the innermost atomic orbitals.
(C) The K series refers to X-radiation as a result of electrons moving from outer orbitals of an atom into a vacantorbital of the K shell.
(D)The Ka line is the result of a vacant K orbital filled by an electron falling from the M shell.
(E)The wavelength (energy) of the Ka lines for molybdenum is independent of its oxid ation state.