1.

In what region of the electromagnetic spectrum would you look the spectral line resulting from the electronic transition from the tenth to the fifth electronic level in the hydrogen atoms ? (R_(H)=1.10xx10^(5) cm^(-1))

Answer»

Microwave
Infrared
Visible
Ultraviolet

Solution :Wave nimbers are the RECIPROCALS of wavelengths and are given by the expression `BAR(V)=1/lambda`
`1/bar(v)=1.1xx10^(5)[1/n_(1)-1/n_(2)]`


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