Multiple Choice
What happens when the electron in a hydrogen atom flips its direction of spin,starting parallel to the spin of the proton and ending antiparallel to the spin of the proton?
A) Nothing-this is a forbidden transition and never occurs.
B) The atom emits a photon of 656.3 nm wavelength in the red region of the spectrum.
C) The atom emits a photon of 121.5 nm wavelength in the UV region of the spectrum.
D) The atom emits a photon of 21-cm wavelength in the radio region of the spectrum.
Correct Answer:
Verified
Correct Answer:
Verified
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