For the first time in 1914, Henry Moseley used X-rays for the determination of:
Correct answer: A. Atomic Number
- A. Atomic Number
- B. Atomic Mass
- C. Molecular Mass
- D. Equivalent mass
Explanation
In 1914, he observed and measured the X-ray spectra of various chemical elements using diffraction in crystals. Through this, he discovered a systematic relation between wavelength and atomic number. This discovery is now known as Moseley's Law. He found that certain lines in the X-ray spectrum of elements move by the same amount each time when we increase the atomic number by one.
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About Spectroscopy and Analysis
Spectroscopy studies how substances absorb, emit or interact with electromagnetic radiation. Coverage includes ultraviolet-visible absorption, infrared identification of functional groups, Beer-Lambert law, spectral interpretation and the use of spectroscopic data to identify or determine the concentration of chemical substances.
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