Asked by Lisa
                 calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from 
n=5 to n=1
how do I do this?
            
        n=5 to n=1
how do I do this?
Answers
                    Answered by
            DrBob222
            
    E = 2.180E-18 J*(1/1^2 - 1/5^2)
    
                    Answered by
            Lisa
            
    I think I am doing something wrong. 
I keep coming up with 8.72x10^17 and it is telling me I am wrong.
I know D E=2.18x10^-18 x (1/1^2-1/5^2)
    
I keep coming up with 8.72x10^17 and it is telling me I am wrong.
I know D E=2.18x10^-18 x (1/1^2-1/5^2)
                    Answered by
            Lisa
            
    i think I am not doing this part right 
(1/n5^2 - 1/n1^2)
    
(1/n5^2 - 1/n1^2)
                    Answered by
            Anonymous
            
    2.0928 x 10(to the power of -18)
    
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