hydrogen atom emits light when it changes from `n=5` energy level to ` – InterviewSolution

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1.	hydrogen atom emits light when it changes from `n=5` energy level to `n=2` energy level. Which colour of light would the atom emit ?A. redB. yellowC. greenD. voilet.
Answer» Correct Answer - D `(1)/(lambda)=R[1/(2^2)-1/(5^2)]=R[1/(4)-1/(25)]=(21R)/(100)` `therefore lambda=(100)/(21R)=(100)/(21xx1.1xx10^7)=(100)/(23.1)xx10^-7m=4346Å` This corresponds to voilet.

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