Question: Question 9 ( 1 point ) What is the wavelength of a photon emitted from a hydrogen atom when an electron changes from 2 n

Question 9(1 point)
What is the wavelength of a photon emitted from a hydrogen atom when an electron changes from 2nd level to the ground level?
(speed of light is 2.998108ms & Planck's constant is 6.6210-34Js)
142 nm
No wavelength is produced
121 nm
412 nm
Question 9 ( 1 point ) What is the wavelength of

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