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Which colour of the spectrum has (a) lon...

Which colour of the spectrum has (a) longest wavelength, and (b) shortest wavelength ?

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The correct Answer is:
(a) Red (b) Violet
NA
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A certain species of ionized atoms produces emission line spectral accorduing to the Bohr's model. A group of lines in the spectrum is forming a series in which in the shortest wavelength is 22.79 nm and the longest wavelength is 41.02 nm . The atomic number of atom is Z . Based on above information, answer the following question: The series belongs to