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Grade 12Modern Physics

Find the binding energy of an e- in the grnd state of a H like atom in whose spectrum the third balmer line is equal to 108.5nm

Profile image of rajan jha
15 Years agoGrade 12
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1 Answer

Profile image of vikas askiitian expert
ApprovedApproved Tutor Answer15 Years ago

1/lamda = R(1/22 - 1/52)Z2

 Z = 2

now energy of n=1 is = -13.6Z2 ev

binding energy = 13.6Z2 =13.6*4=54.4ev

 

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