A Hydrogen Atom Is Excited to the N = 10

question 47

Multiple Choice

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,

• 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