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Consider an electron in the n = 5 energy level (use the diagram on the right but

ID: 1072673 • Letter: C

Question

Consider an electron in the n = 5 energy level (use the diagram on the right but ignore the arrow) If an electron begins at n = 4, which transition of the electron involves the lowest frequency of light? If an electron begins at n = 4, which transition would require the highest frequency of light? If a transition from n = 4 to n = 2 emits green light, what color of light is absorbed when an electron transitions from n = 2 to n = 4? Understand the relationship between frequency and energy, and a theoretical problem like this should be no problem!

Explanation / Answer

Based on the given values of each level,

(a) Lowest frequency required for n = 4 to n = 3 transition

E = - RH/ 16 + RH/9

(b) Highest frequency is required for n = 4 to n =1 transition

E = - RH/16 + RH

(c) The frequency of light emitted = the frequency of light absorbed = green colour light