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CBSE Class 12-science Answered

If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of He+ is :
Asked by kmondaldgms | 23 Aug, 2018, 11:05: PM
answered-by-expert Expert Answer
For space Lyman space series space open parentheses Shortes space wavelength close parentheses straight n subscript 1 equals 1 comma space straight n subscript 2 space equals infinity 1 over straight lambda space equals straight R open parentheses 1 over straight n subscript 1 squared minus 1 over straight n squared subscript 2 close parentheses straight z squared 1 over straight A equals space 1 to the power of 1 straight R open parentheses 1 over 1 minus 1 over infinity close parentheses 1 over straight A equals space straight R straight n subscript 1 equals 3 comma space straight n subscript 2 space equals 4 1 over straight lambda equals straight R open parentheses 1 over 3 squared minus 1 over 4 squared close parentheses straight z squared 1 over straight lambda equals fraction numerator 1 over straight A cross times 7 over denominator 36 end fraction 1 over straight lambda equals fraction numerator 7 over denominator 36 straight A end fraction straight lambda space equals fraction numerator 36 straight A over denominator 7 end fraction
The longest wavelength in Paschen series of He+ is 36A/7
Answered by Varsha | 25 Aug, 2018, 03:12: PM
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CBSE 12-science - Chemistry
If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of He+ is :
Asked by kmondaldgms | 23 Aug, 2018, 11:05: PM
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