A) energy
B) velocity
C) radius
D) quantum number
Correct Answer: A
Solution :
Key Idea: Use the formula\[E=\frac{hc}{\lambda }\]to solve the problem. It means\[E\propto \frac{1}{\lambda }\] \[\therefore \]wavelength of spectral line emitted is inversely proportional to photon energy (E).
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