Light excites atomic hydrogen from its lowest level to the n = 4 ...

[asmith134]

Light excites atomic hydrogen from its lowest level to the n = 4 level. What is the energy of the light? The energy of the lowest level is -13.6 eV.
 
  A) 12.8 eV
  B) 3.40 eV
  C) 0.850 eV
  D) 26.4 eV

Question 2

A hydrogen atom is excited to the n = 10 stated. It then decays to the n = 4 state by emitting a photon which is detected in a photographic plate. What is the frequency of the detected photon?
 
  The lowest level energy state of hydrogen is -13.6 eV. (h = 6.626  10-34 J  s,
  1 eV = 1.60  10-19 J)
  A) 3.46  1014 Hz
  B) 0.865  1014 Hz
  C) 1.27  1014 Hz
  D) 4.05  1014 Hz
  E) 1.73  1014 Hz

[sarajane1989]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: E