Moderate

Which series is emitted when electron jumps from a higher orbit to fifth orbit?

Correct answer: D. Pfund

  • A. Lymann
  • B. Balmer
  • C. Brackett
  • D. Pfund

Explanation

The series emitted is in the order from 1: (5)Lymann → Balmer → Paschen → Brackett → Pfund → HumpherySo, for 5th orbit it is Pfund series.

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Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.

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