Electron moves in the orbit as________________?
Correct answer: B. Standing wave motion
- A. Simple vibratory motion
- B. Standing wave motion
- C. Vibratory motion like up and down
- D. S.H.M likes the sound
Explanation
In the de Broglie model, an electron allowed in an atomic orbit behaves like a standing matter wave, with the orbit containing an integral number of wavelengths. This explains why only certain electron orbits are stable. The likely mistake is choosing simple vibratory motion, which describes oscillation about an equilibrium position rather than a standing wave around an orbit.
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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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