Which of the following X-rays has the largest intensity?
Correct answer: A. Kα X-Ray
- A. Kα X-Ray
- B. Kß X-Ray
- C. Kγ X-Ray
- D. All of these options have the same intensity
Explanation
Kα X-rays exhibit the largest intensity due to the considerable energy released when an electron transitions from the n=2 to n=1 energy level in an atom. This transition generates a strong ionization effect, allowing Kα X-rays to ionize a greater number of atoms in a short distance, resulting in their higher intensity. In contrast, Kß X-rays, while having greater penetration power, possess lower ionization and intensity. Kγ X-rays, although they penetrate effectively, also do not have the same ionization capability, making them less intense than Kα X-rays. The fourth option incorrectly assumes equal intensity across all types, which is not the case.
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Atoms emit or absorb light at specific wavelengths because electrons occupy quantized energy levels and change levels by absorbing or releasing photons. The topic covers emission and absorption spectra, spectral series, hydrogen’s line spectrum, energy-level transitions, and the relation between wavelength, frequency and photon energy.
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