The energy increases. The speed decreases. Planck\'s constant decreases. None of

Question

The energy increases. The speed decreases. Planck's constant decreases. None of the above occurs as the wavelength of a photon increases. Electromagnetic radiation with a wavelength of 525 nm appears as green light to human eye. The energy of one photon of this light is_________J. 1.04 times 10^-31 3.79 times 10^-28 3.79 times 10^-19 1.04 times 10^-22 2.64 times 10^-18 Calculate the wavelength of light associated with the transition from n = 1 to n = 2 the hydrogen atom. 103 nm 155 nm 646 nm 292 nm 136 nm

Explanation / Answer

Apply

WL = hc/E

h = planck constat = 6.63*10^-34

c = sped of ligh = 3*10^8

WL = 525*10^-9

then

E= hc/WL = ( 6.63*10^-34)(3*10^8) /(525*10^-9 = 3.7885*10^-19 J

choose C

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