If an electron in the 'K' shell is removed and an electron from the 'L' shell jumps to occupy the hole in the 'K' shell, it emits a photon of energy:
Correct answer: A. hfKα = EL - EK
- A. hfKα = EL - EK
- B. hc = EL - EK
- C. h/λKα = EL - EK
- D. hfKα = EK - EL
Explanation
When an electron is removed from the K-shell, leaving a hole, an electron from a higher energy level (L-shell in this case) can jump down to fill the gap, emitting a photon of energy equal to the difference in energy between the two levels. This is known as the characteristic X-ray emission.The energy of the emitted photon is given by the equation:hfKa = EL - Ek
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About Atomic Spectra
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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