The wavelength of Kα characteristic X-ray of iron and potassium are 1.931 × 10'8 and 3.737 × 10'8 cm, respectively. The atomic number of the element of which characteristic Kα wavelength is 2.289 × 10'8cm is

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The wavelength of Kα characteristic X-ray of iron and potassium are 1.931 × 10'8 and 3.737 × 10'8 cm, respectively. The atomic number of the element of which characteristic Kα wavelength is 2.289 × 10'8cm is





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