A hydrogen atom initially in the n = 6 state decays to the n = 2 ...

[pepyto]

A hydrogen atom initially in the n = 6 state decays to the n = 2 state. The emitted photon is detected in a photographic plate. What is the wavelength 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, c = 3.00  108 m/s)
  A) 1090 nm B) 93.1 nm C) 410 nm D) 93.8 nm

Question 2

If an atomic nucleus containing 64 nucleons has a mass density , what will be the expected mass density of a nucleus containing 512 nucleons?
 
  A) 2 B) 8 C) 4 D) 16 E)

[tashiedavis420]

Answer to Question 1

C

Answer to Question 2

E