In X-ray fluorescence (XRF), the energy of the characteristic Ka line of iron (Fe) is 6.405 keV. Calculate the wavelength (in Å) corresponding to this line and state what electronic transition this represents. (DATA: h = 6.626 x 10-34 J s; c = 2.998 x 108 m s-1; e = 1.602 x 10-19 C)

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 In X-ray fluorescence (XRF), the energy of the characteristic Ka line of iron (Fe) is 6.405 keV. Calculate the wavelength (in Å) corresponding to this line and state what electronic transition this represents.

(DATA: h = 6.626 x 10-34 J s; c = 2.998 x 108 m s-1; e = 1.602 x 10-19 C)

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